Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle

Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experiment...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Han, Yadong [verfasserIn] Liu, Ming [verfasserIn] Tan, Lei [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode

Übergeordnetes Werk:	Enthalten in: Ocean engineering - Amsterdam [u.a.] : Elsevier Science, 1970, 261
Übergeordnetes Werk:	volume:261

DOI / URN:	10.1016/j.oceaneng.2022.112114

Katalog-ID:	ELV008490155

Internformat


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520			\|a Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations.
650		4	\|a Cavitating flow
650		4	\|a Venturi nozzle
650		4	\|a Dynamic mode decomposition
650		4	\|a Proper orthogonal decomposition
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700	1		\|a Tan, Lei \|e verfasserin \|0 (orcid)0000-0001-5415-787X \|4 aut
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allfields	10.1016/j.oceaneng.2022.112114 doi (DE-627)ELV008490155 (ELSEVIER)S0029-8018(22)01437-8 DE-627 ger DE-627 rda eng 690 DE-600 50.92 bkl Han, Yadong verfasserin (orcid)0000-0002-7299-8370 aut Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations. Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode Liu, Ming verfasserin aut Tan, Lei verfasserin (orcid)0000-0001-5415-787X aut Enthalten in Ocean engineering Amsterdam [u.a.] : Elsevier Science, 1970 261 Online-Ressource (DE-627)30658977X (DE-600)1498543-3 (DE-576)259484164 0029-8018 nnns volume:261 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4335 GBV_ILN_4338 GBV_ILN_4393 50.92 Meerestechnik AR 261
spelling	10.1016/j.oceaneng.2022.112114 doi (DE-627)ELV008490155 (ELSEVIER)S0029-8018(22)01437-8 DE-627 ger DE-627 rda eng 690 DE-600 50.92 bkl Han, Yadong verfasserin (orcid)0000-0002-7299-8370 aut Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations. Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode Liu, Ming verfasserin aut Tan, Lei verfasserin (orcid)0000-0001-5415-787X aut Enthalten in Ocean engineering Amsterdam [u.a.] : Elsevier Science, 1970 261 Online-Ressource (DE-627)30658977X (DE-600)1498543-3 (DE-576)259484164 0029-8018 nnns volume:261 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4335 GBV_ILN_4338 GBV_ILN_4393 50.92 Meerestechnik AR 261
allfields_unstemmed	10.1016/j.oceaneng.2022.112114 doi (DE-627)ELV008490155 (ELSEVIER)S0029-8018(22)01437-8 DE-627 ger DE-627 rda eng 690 DE-600 50.92 bkl Han, Yadong verfasserin (orcid)0000-0002-7299-8370 aut Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations. Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode Liu, Ming verfasserin aut Tan, Lei verfasserin (orcid)0000-0001-5415-787X aut Enthalten in Ocean engineering Amsterdam [u.a.] : Elsevier Science, 1970 261 Online-Ressource (DE-627)30658977X (DE-600)1498543-3 (DE-576)259484164 0029-8018 nnns volume:261 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4335 GBV_ILN_4338 GBV_ILN_4393 50.92 Meerestechnik AR 261
allfieldsGer	10.1016/j.oceaneng.2022.112114 doi (DE-627)ELV008490155 (ELSEVIER)S0029-8018(22)01437-8 DE-627 ger DE-627 rda eng 690 DE-600 50.92 bkl Han, Yadong verfasserin (orcid)0000-0002-7299-8370 aut Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations. Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode Liu, Ming verfasserin aut Tan, Lei verfasserin (orcid)0000-0001-5415-787X aut Enthalten in Ocean engineering Amsterdam [u.a.] : Elsevier Science, 1970 261 Online-Ressource (DE-627)30658977X (DE-600)1498543-3 (DE-576)259484164 0029-8018 nnns volume:261 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4335 GBV_ILN_4338 GBV_ILN_4393 50.92 Meerestechnik AR 261
allfieldsSound	10.1016/j.oceaneng.2022.112114 doi (DE-627)ELV008490155 (ELSEVIER)S0029-8018(22)01437-8 DE-627 ger DE-627 rda eng 690 DE-600 50.92 bkl Han, Yadong verfasserin (orcid)0000-0002-7299-8370 aut Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations. Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode Liu, Ming verfasserin aut Tan, Lei verfasserin (orcid)0000-0001-5415-787X aut Enthalten in Ocean engineering Amsterdam [u.a.] : Elsevier Science, 1970 261 Online-Ressource (DE-627)30658977X (DE-600)1498543-3 (DE-576)259484164 0029-8018 nnns volume:261 GBV_USEFLAG_U SYSFLAG_U GBV_ELV 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_63 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_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 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_4335 GBV_ILN_4338 GBV_ILN_4393 50.92 Meerestechnik AR 261
language	English
source	Enthalten in Ocean engineering 261 volume:261
sourceStr	Enthalten in Ocean engineering 261 volume:261
format_phy_str_mv	Article
bklname	Meerestechnik
institution	findex.gbv.de
topic_facet	Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode
dewey-raw	690
isfreeaccess_bool	false
container_title	Ocean engineering
authorswithroles_txt_mv	Han, Yadong @@aut@@ Liu, Ming @@aut@@ Tan, Lei @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
hierarchy_top_id	30658977X
dewey-sort	3690
id	ELV008490155
language_de	englisch
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In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. 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author	Han, Yadong
spellingShingle	Han, Yadong ddc 690 bkl 50.92 misc Cavitating flow misc Venturi nozzle misc Dynamic mode decomposition misc Proper orthogonal decomposition misc Mode Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle
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topic_title	690 DE-600 50.92 bkl Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle Cavitating flow Venturi nozzle Dynamic mode decomposition Proper orthogonal decomposition Mode
topic	ddc 690 bkl 50.92 misc Cavitating flow misc Venturi nozzle misc Dynamic mode decomposition misc Proper orthogonal decomposition misc Mode
topic_unstemmed	ddc 690 bkl 50.92 misc Cavitating flow misc Venturi nozzle misc Dynamic mode decomposition misc Proper orthogonal decomposition misc Mode
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title	Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle
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title_full	Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle
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title_sort	method of data-driven mode decomposition for cavitating flow in a venturi nozzle
title_auth	Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle
abstract	Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations.
abstractGer	Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations.
abstract_unstemmed	Cavitation is a common phenomenon that occurs in ocean engineering. In the present work, experimental measurement of cavitating flow in a Venturi nozzle is carried out at cavitation number σ = 1.5, and then the simulation based on the Zwart cavitation model is conducted with validation of experimental data. Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) are introduced to investigate the three-dimensional coherent structures of cavitation and flow fields. For decomposition of vapor volume fraction, both POD and DMD results can characterize cavitation structures and associated frequencies, while different dominant structures can be obtained. For decomposition of streamwise velocity, POD results extract the coherent structures with converse polarities induced by the vortices related to cavity evolution, and DMD results shed light on the structures related to the overall periodic dynamics of cloud cavitation under shedding frequency. Based on the mode decomposition of vapor volume fraction and streamwise velocity, the cavitation-velocity interaction is revealed. Under the studied cavitation condition, cavitation and velocity mainly interact in the range of 0-3L ref downstream the Venturi throat, where the modes of vapor volume fraction and streamwise velocity show similar coherent structures and mode value fluctuations.
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title_short	Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle
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doi_str	10.1016/j.oceaneng.2022.112114
up_date	2024-07-06T19:52:43.235Z
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Method of data-driven mode decomposition for cavitating flow in a Venturi nozzle

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