Performance of water-jet pump under acceleration

The instantaneous acceleration affects the performance of the water-jet pump obviously. Here, based on the user-defined function, the method to simulate the inner flow in water-jet pumps under acceleration conditions was established. The effects of two different acceleration modes (linear accelerati...

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Autores principales:	Xian-Fang Wu, Ming-Hui Li, Hou-Lin Liu, Ming-Gao Tan, You-Dong Lu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Water-jet pump Acceleration mode Acceleration time Numerical simulation Pressure pulsation Cavitation Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989
Acceso en línea:	https://doaj.org/article/61944ad195844506bacbe1a077f9947c
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id	oai:doaj.org-article:61944ad195844506bacbe1a077f9947c
record_format	dspace
spelling	oai:doaj.org-article:61944ad195844506bacbe1a077f9947c2021-11-18T04:47:42ZPerformance of water-jet pump under acceleration2092-678210.1016/j.ijnaoe.2021.10.004https://doaj.org/article/61944ad195844506bacbe1a077f9947c2021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S209267822100056Xhttps://doaj.org/toc/2092-6782The instantaneous acceleration affects the performance of the water-jet pump obviously. Here, based on the user-defined function, the method to simulate the inner flow in water-jet pumps under acceleration conditions was established. The effects of two different acceleration modes (linear acceleration and exponential acceleration) and three kinds of different acceleration time (0.5s, 1s and 2s) on the performance of the water-jet pump were analyzed. The results show that the thrust and the pressure pulsation under exponential acceleration are lower than that under linear acceleration at the same time; the vapor volume fraction in the impeller under linear acceleration is 27.3% higher than that under exponential acceleration. As the acceleration time increases, the thrust gradually increases and the pressure pulsation amplitude at the impeller inlet and outlet gradually decreases, while the law of pressure pulsation is the opposite at the diffuser outlet. The main frequency of pressure pulsation at the impeller outlet is different under different acceleration time. The research results can provide some reference for the optimal design of water-jet pumps.Xian-Fang WuMing-Hui LiHou-Lin LiuMing-Gao TanYou-Dong LuElsevierarticleWater-jet pumpAcceleration modeAcceleration timeNumerical simulationPressure pulsationCavitationOcean engineeringTC1501-1800Naval architecture. Shipbuilding. Marine engineeringVM1-989ENInternational Journal of Naval Architecture and Ocean Engineering, Vol 13, Iss , Pp 794-803 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Water-jet pump Acceleration mode Acceleration time Numerical simulation Pressure pulsation Cavitation Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989
spellingShingle	Water-jet pump Acceleration mode Acceleration time Numerical simulation Pressure pulsation Cavitation Ocean engineering TC1501-1800 Naval architecture. Shipbuilding. Marine engineering VM1-989 Xian-Fang Wu Ming-Hui Li Hou-Lin Liu Ming-Gao Tan You-Dong Lu Performance of water-jet pump under acceleration
description	The instantaneous acceleration affects the performance of the water-jet pump obviously. Here, based on the user-defined function, the method to simulate the inner flow in water-jet pumps under acceleration conditions was established. The effects of two different acceleration modes (linear acceleration and exponential acceleration) and three kinds of different acceleration time (0.5s, 1s and 2s) on the performance of the water-jet pump were analyzed. The results show that the thrust and the pressure pulsation under exponential acceleration are lower than that under linear acceleration at the same time; the vapor volume fraction in the impeller under linear acceleration is 27.3% higher than that under exponential acceleration. As the acceleration time increases, the thrust gradually increases and the pressure pulsation amplitude at the impeller inlet and outlet gradually decreases, while the law of pressure pulsation is the opposite at the diffuser outlet. The main frequency of pressure pulsation at the impeller outlet is different under different acceleration time. The research results can provide some reference for the optimal design of water-jet pumps.
format	article
author	Xian-Fang Wu Ming-Hui Li Hou-Lin Liu Ming-Gao Tan You-Dong Lu
author_facet	Xian-Fang Wu Ming-Hui Li Hou-Lin Liu Ming-Gao Tan You-Dong Lu
author_sort	Xian-Fang Wu
title	Performance of water-jet pump under acceleration
title_short	Performance of water-jet pump under acceleration
title_full	Performance of water-jet pump under acceleration
title_fullStr	Performance of water-jet pump under acceleration
title_full_unstemmed	Performance of water-jet pump under acceleration
title_sort	performance of water-jet pump under acceleration
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/61944ad195844506bacbe1a077f9947c
work_keys_str_mv	AT xianfangwu performanceofwaterjetpumpunderacceleration AT minghuili performanceofwaterjetpumpunderacceleration AT houlinliu performanceofwaterjetpumpunderacceleration AT minggaotan performanceofwaterjetpumpunderacceleration AT youdonglu performanceofwaterjetpumpunderacceleration
_version_	1718425043197755392

Performance of water-jet pump under acceleration

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