On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications
Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience...
Ausführliche Beschreibung
Autor*in: |
Wang, Chaoyue [verfasserIn] Wang, Benhong [verfasserIn] Wang, Fujun [verfasserIn] Wang, Hao [verfasserIn] Hong, Yiping [verfasserIn] Wu, Jie [verfasserIn] Li, Dianji [verfasserIn] Shao, Chunbing [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2024 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Energy - Amsterdam [u.a.] : Elsevier Science, 1976, 292 |
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Übergeordnetes Werk: |
volume:292 |
DOI / URN: |
10.1016/j.energy.2024.130528 |
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Katalog-ID: |
ELV067209580 |
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245 | 1 | 0 | |a On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications |
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520 | |a Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. | ||
650 | 4 | |a Energy engineering | |
650 | 4 | |a Energy conversion | |
650 | 4 | |a Scale effect | |
650 | 4 | |a Bulb tubular pump | |
650 | 4 | |a Similarity law | |
650 | 4 | |a Gravity | |
700 | 1 | |a Wang, Benhong |e verfasserin |4 aut | |
700 | 1 | |a Wang, Fujun |e verfasserin |4 aut | |
700 | 1 | |a Wang, Hao |e verfasserin |4 aut | |
700 | 1 | |a Hong, Yiping |e verfasserin |4 aut | |
700 | 1 | |a Wu, Jie |e verfasserin |4 aut | |
700 | 1 | |a Li, Dianji |e verfasserin |4 aut | |
700 | 1 | |a Shao, Chunbing |e verfasserin |4 aut | |
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10.1016/j.energy.2024.130528 doi (DE-627)ELV067209580 (ELSEVIER)S0360-5442(24)00299-8 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Wang, Chaoyue verfasserin aut On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. Energy engineering Energy conversion Scale effect Bulb tubular pump Similarity law Gravity Wang, Benhong verfasserin aut Wang, Fujun verfasserin aut Wang, Hao verfasserin aut Hong, Yiping verfasserin aut Wu, Jie verfasserin aut Li, Dianji verfasserin aut Shao, Chunbing verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 292 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:292 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 50.70 Energie: Allgemeines VZ AR 292 |
spelling |
10.1016/j.energy.2024.130528 doi (DE-627)ELV067209580 (ELSEVIER)S0360-5442(24)00299-8 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Wang, Chaoyue verfasserin aut On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. Energy engineering Energy conversion Scale effect Bulb tubular pump Similarity law Gravity Wang, Benhong verfasserin aut Wang, Fujun verfasserin aut Wang, Hao verfasserin aut Hong, Yiping verfasserin aut Wu, Jie verfasserin aut Li, Dianji verfasserin aut Shao, Chunbing verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 292 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:292 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 50.70 Energie: Allgemeines VZ AR 292 |
allfields_unstemmed |
10.1016/j.energy.2024.130528 doi (DE-627)ELV067209580 (ELSEVIER)S0360-5442(24)00299-8 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Wang, Chaoyue verfasserin aut On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. Energy engineering Energy conversion Scale effect Bulb tubular pump Similarity law Gravity Wang, Benhong verfasserin aut Wang, Fujun verfasserin aut Wang, Hao verfasserin aut Hong, Yiping verfasserin aut Wu, Jie verfasserin aut Li, Dianji verfasserin aut Shao, Chunbing verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 292 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:292 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 50.70 Energie: Allgemeines VZ AR 292 |
allfieldsGer |
10.1016/j.energy.2024.130528 doi (DE-627)ELV067209580 (ELSEVIER)S0360-5442(24)00299-8 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Wang, Chaoyue verfasserin aut On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. Energy engineering Energy conversion Scale effect Bulb tubular pump Similarity law Gravity Wang, Benhong verfasserin aut Wang, Fujun verfasserin aut Wang, Hao verfasserin aut Hong, Yiping verfasserin aut Wu, Jie verfasserin aut Li, Dianji verfasserin aut Shao, Chunbing verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 292 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:292 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 50.70 Energie: Allgemeines VZ AR 292 |
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10.1016/j.energy.2024.130528 doi (DE-627)ELV067209580 (ELSEVIER)S0360-5442(24)00299-8 DE-627 ger DE-627 rda eng 600 VZ 50.70 bkl Wang, Chaoyue verfasserin aut On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. Energy engineering Energy conversion Scale effect Bulb tubular pump Similarity law Gravity Wang, Benhong verfasserin aut Wang, Fujun verfasserin aut Wang, Hao verfasserin aut Hong, Yiping verfasserin aut Wu, Jie verfasserin aut Li, Dianji verfasserin aut Shao, Chunbing verfasserin aut Enthalten in Energy Amsterdam [u.a.] : Elsevier Science, 1976 292 Online-Ressource (DE-627)320597903 (DE-600)2019804-8 (DE-576)116451815 1873-6785 nnns volume:292 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 50.70 Energie: Allgemeines VZ AR 292 |
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Wang, Chaoyue @@aut@@ Wang, Benhong @@aut@@ Wang, Fujun @@aut@@ Wang, Hao @@aut@@ Hong, Yiping @@aut@@ Wu, Jie @@aut@@ Li, Dianji @@aut@@ Shao, Chunbing @@aut@@ |
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Wang, Chaoyue |
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Wang, Chaoyue ddc 600 bkl 50.70 misc Energy engineering misc Energy conversion misc Scale effect misc Bulb tubular pump misc Similarity law misc Gravity On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications |
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600 VZ 50.70 bkl On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications Energy engineering Energy conversion Scale effect Bulb tubular pump Similarity law Gravity |
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ddc 600 bkl 50.70 misc Energy engineering misc Energy conversion misc Scale effect misc Bulb tubular pump misc Similarity law misc Gravity |
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On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications |
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On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications |
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Wang, Chaoyue Wang, Benhong Wang, Fujun Wang, Hao Hong, Yiping Wu, Jie Li, Dianji Shao, Chunbing |
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on the scale effect of energy conversion in large-scale bulb tubular pump: characteristics, mechanisms and applications |
title_auth |
On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications |
abstract |
Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. |
abstractGer |
Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. |
abstract_unstemmed |
Bulb tubular pump is a special pump type with considerable application potential in low-head energy engineering. The energy performance of a large-scale bulb tubular pump can only be estimated based on its hydraulic model according to the conventional similarity law. However, engineering experience shows that this approach may cause significant errors, but the reason is still unclear due to the lack of understanding the scale effect of its energy conversion. In this paper, the characteristics, mechanisms and applications of the scale effect of energy conversion in large-scale bulb tubular pump are comprehensively studied. Progressive characteristics of energy conversion are quantified and a special scale effect is found. Hydraulic efficiency and head exhibit a feature of first increasing and then decreasing as the geometric scale increases, and the critical scale is 16. The competition between viscous effect and gravity effect is the origin of this special scale effect. When the bulb tubular pump exceeds a certain size, gravity-induced pressure polarization oscillation and partial flow separation are rapidly highlighted, destroying the hydraulic consistency and leading to a surge in energy loss and hydraulic instability. According to these findings, an improved similarity conversion mode is proposed for the bulb tubular pump, and the hydraulic efficiency drift with the geometric scale is determined by combining the dynamic weights of gravity effect and viscous effect. More importantly, this indicates the existence of a theoretical limit of pump size to balance the economy and safety, which should be paid attention to in energy engineering. |
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On the scale effect of energy conversion in large-scale bulb tubular pump: Characteristics, mechanisms and applications |
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Wang, Benhong Wang, Fujun Wang, Hao Hong, Yiping Wu, Jie Li, Dianji Shao, Chunbing |
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