Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes
In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Rao, Yu [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018transfer abstract |
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| Umfang: |
14 |
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| Übergeordnetes Werk: |
Enthalten in: 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS - 2011, IJTS, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:133 ; year:2018 ; pages:106-119 ; extent:14 |
| Links: |
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| DOI / URN: |
10.1016/j.ijthermalsci.2018.07.021 |
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| Katalog-ID: |
ELV04392042X |
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| 245 | 1 | 0 | |a Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes |
| 264 | 1 | |c 2018transfer abstract | |
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| 520 | |a In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. | ||
| 520 | |a In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. | ||
| 650 | 7 | |a Impingement cooling |2 Elsevier | |
| 650 | 7 | |a Pin fins |2 Elsevier | |
| 650 | 7 | |a Effusion holes |2 Elsevier | |
| 650 | 7 | |a Gas turbine |2 Elsevier | |
| 650 | 7 | |a Transient liquid crystal thermography |2 Elsevier | |
| 650 | 7 | |a Heat transfer |2 Elsevier | |
| 700 | 1 | |a Liu, Yuyang |4 oth | |
| 700 | 1 | |a Wan, Chaoyi |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |t 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS |d 2011 |d IJTS |g Amsterdam [u.a.] |w (DE-627)ELV015685845 |
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10.1016/j.ijthermalsci.2018.07.021 doi GBV00000000000700.pica (DE-627)ELV04392042X (ELSEVIER)S1290-0729(18)30245-X DE-627 ger DE-627 rakwb eng 610 VZ 610 VZ 44.44 bkl Rao, Yu verfasserin aut Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. Impingement cooling Elsevier Pin fins Elsevier Effusion holes Elsevier Gas turbine Elsevier Transient liquid crystal thermography Elsevier Heat transfer Elsevier Liu, Yuyang oth Wan, Chaoyi oth Enthalten in Elsevier Science 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS 2011 IJTS Amsterdam [u.a.] (DE-627)ELV015685845 volume:133 year:2018 pages:106-119 extent:14 https://doi.org/10.1016/j.ijthermalsci.2018.07.021 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.44 Parasitologie Medizin VZ AR 133 2018 106-119 14 |
| spelling |
10.1016/j.ijthermalsci.2018.07.021 doi GBV00000000000700.pica (DE-627)ELV04392042X (ELSEVIER)S1290-0729(18)30245-X DE-627 ger DE-627 rakwb eng 610 VZ 610 VZ 44.44 bkl Rao, Yu verfasserin aut Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. Impingement cooling Elsevier Pin fins Elsevier Effusion holes Elsevier Gas turbine Elsevier Transient liquid crystal thermography Elsevier Heat transfer Elsevier Liu, Yuyang oth Wan, Chaoyi oth Enthalten in Elsevier Science 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS 2011 IJTS Amsterdam [u.a.] (DE-627)ELV015685845 volume:133 year:2018 pages:106-119 extent:14 https://doi.org/10.1016/j.ijthermalsci.2018.07.021 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.44 Parasitologie Medizin VZ AR 133 2018 106-119 14 |
| allfields_unstemmed |
10.1016/j.ijthermalsci.2018.07.021 doi GBV00000000000700.pica (DE-627)ELV04392042X (ELSEVIER)S1290-0729(18)30245-X DE-627 ger DE-627 rakwb eng 610 VZ 610 VZ 44.44 bkl Rao, Yu verfasserin aut Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. Impingement cooling Elsevier Pin fins Elsevier Effusion holes Elsevier Gas turbine Elsevier Transient liquid crystal thermography Elsevier Heat transfer Elsevier Liu, Yuyang oth Wan, Chaoyi oth Enthalten in Elsevier Science 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS 2011 IJTS Amsterdam [u.a.] (DE-627)ELV015685845 volume:133 year:2018 pages:106-119 extent:14 https://doi.org/10.1016/j.ijthermalsci.2018.07.021 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.44 Parasitologie Medizin VZ AR 133 2018 106-119 14 |
| allfieldsGer |
10.1016/j.ijthermalsci.2018.07.021 doi GBV00000000000700.pica (DE-627)ELV04392042X (ELSEVIER)S1290-0729(18)30245-X DE-627 ger DE-627 rakwb eng 610 VZ 610 VZ 44.44 bkl Rao, Yu verfasserin aut Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. Impingement cooling Elsevier Pin fins Elsevier Effusion holes Elsevier Gas turbine Elsevier Transient liquid crystal thermography Elsevier Heat transfer Elsevier Liu, Yuyang oth Wan, Chaoyi oth Enthalten in Elsevier Science 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS 2011 IJTS Amsterdam [u.a.] (DE-627)ELV015685845 volume:133 year:2018 pages:106-119 extent:14 https://doi.org/10.1016/j.ijthermalsci.2018.07.021 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.44 Parasitologie Medizin VZ AR 133 2018 106-119 14 |
| allfieldsSound |
10.1016/j.ijthermalsci.2018.07.021 doi GBV00000000000700.pica (DE-627)ELV04392042X (ELSEVIER)S1290-0729(18)30245-X DE-627 ger DE-627 rakwb eng 610 VZ 610 VZ 44.44 bkl Rao, Yu verfasserin aut Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes 2018transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. Impingement cooling Elsevier Pin fins Elsevier Effusion holes Elsevier Gas turbine Elsevier Transient liquid crystal thermography Elsevier Heat transfer Elsevier Liu, Yuyang oth Wan, Chaoyi oth Enthalten in Elsevier Science 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS 2011 IJTS Amsterdam [u.a.] (DE-627)ELV015685845 volume:133 year:2018 pages:106-119 extent:14 https://doi.org/10.1016/j.ijthermalsci.2018.07.021 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.44 Parasitologie Medizin VZ AR 133 2018 106-119 14 |
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Enthalten in 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS Amsterdam [u.a.] volume:133 year:2018 pages:106-119 extent:14 |
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Enthalten in 4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS Amsterdam [u.a.] volume:133 year:2018 pages:106-119 extent:14 |
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Rao, Yu ddc 610 bkl 44.44 Elsevier Impingement cooling Elsevier Pin fins Elsevier Effusion holes Elsevier Gas turbine Elsevier Transient liquid crystal thermography Elsevier Heat transfer Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes |
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4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS |
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multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes |
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Multiple-jet impingement heat transfer in double-wall cooling structures with pin fins and effusion holes |
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In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. |
| abstractGer |
In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. |
| abstract_unstemmed |
In a double-wall cooling system with multiple jet impingement the arrangement and size of effusion holes may change flow field and thereby change heat transfer characteristics. This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures. |
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This paper stands in the view of internal cooling of turbine blades, and studied multiple-jet impingement heat transfer in double-wall cooling structures with narrow channels with pin fins and different-size effusion holes on the target wall. Five target plates were investigated including flat plate, pin fin plate and three pin fin plates with different-size effusion holes (effusion-to-jet diameter ratio of D e / D j = 0.5 , 1.0 a n d 1.5 ). Transient liquid crystal thermography experiments were conducted to explore the heat transfer characteristics on these target plates. The ratio of jet-to-plate spacing was fixed to be 1.5 and Reynolds numbers based on the jet diameter range from 15,000 to 30,000. The experimental results showed that the pin fins and effusion holes reduce the crossflow strength in downstream region, improve and uniform heat transfer on the whole target plate obviously. Compared with the flat plate, pin fin plate with effusion holes of D e / D j = 1.5 has highest averaged Nusselt number on the endwall. Numerical computations were carried out based on the experimental model, which revealed that the total heat transfer quantity on the pin fin plate with effusion holes of D e / D j = 1.5 can be increased by up to 51% comparing to that of the flat plate. Detailed interactional flow information between the wall jet flow, pin fins and effusion holes is expounded for the heat transfer improvement in the impingement-effusion structures. Moreover, conjugate heat transfer analyses were done to further investigate the overall cooling performance of the impingement-effusion structures.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Impingement cooling</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Pin fins</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Effusion holes</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Gas turbine</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Transient liquid crystal thermography</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Heat transfer</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Liu, Yuyang</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Wan, Chaoyi</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier Science</subfield><subfield code="t">4 ONCE DAILY ALISPORIVIR (DEB025) PLUS PEGIFNALFA2A/RIBAVIRIN RESULTS IN SUPERIOR SUSTAINED VIROLOGIC RESPONSE (SVR24) IN CHRONIC HEPATITIS C GENOTYPE 1 TREATMENT NAIVE PATIENTS</subfield><subfield code="d">2011</subfield><subfield code="d">IJTS</subfield><subfield code="g">Amsterdam [u.a.]</subfield><subfield code="w">(DE-627)ELV015685845</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:133</subfield><subfield code="g">year:2018</subfield><subfield code="g">pages:106-119</subfield><subfield code="g">extent:14</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.ijthermalsci.2018.07.021</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.44</subfield><subfield code="j">Parasitologie</subfield><subfield code="x">Medizin</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">133</subfield><subfield code="j">2018</subfield><subfield code="h">106-119</subfield><subfield code="g">14</subfield></datafield></record></collection>
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