Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet

The pressure fluctuation characteristics of a rim driven propulsion pump are studied by an experimental method firstly, and then its unsteady inner flow is studied by numerical simulation to reveal the generating mechanism of the pressure fluctuation. In the experiment, a monitoring point was set in...

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Autores principales:	Zhipeng Zhu, Houlin Liu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	rim driven propulsion pump experiment numerical simulation pressure fluctuation inner flow Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/dcb26e8b8e1943d29ffcd3520bb19c28
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spelling	oai:doaj.org-article:dcb26e8b8e1943d29ffcd3520bb19c282021-11-25T18:12:21ZExperimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet10.3390/machines91102932075-1702https://doaj.org/article/dcb26e8b8e1943d29ffcd3520bb19c282021-11-01T00:00:00Zhttps://www.mdpi.com/2075-1702/9/11/293https://doaj.org/toc/2075-1702The pressure fluctuation characteristics of a rim driven propulsion pump are studied by an experimental method firstly, and then its unsteady inner flow is studied by numerical simulation to reveal the generating mechanism of the pressure fluctuation. In the experiment, a monitoring point was set in a downstream region with a distance of 1D (D, Diameter of impeller) to the impeller. The monitoring point’s dominant frequencies within a low frequency band are 1APF (APF, Axial Passing Frequency) and 2APF. In the numerical simulation, the main fluctuation near the impeller region appears at 1BPF (BPF, Blade Passing Frequency) and as the monitoring point moves downstream, the amplitude becomes smaller. The 1BPF fluctuation nearly disappears when the distance exceeds 1D, and the main frequency moves to 1APF and 2APF, which is in good agreement with the experimental results in the low frequency band. The transient velocity, pressure and vorticity distribution were studied to reveal the causes of 1BPF, 1APF and 2APF fluctuation. The main cause of 1BPF is the jet from the tail of the blade and the main cause of 2APF is the movement of a large-scale double vortex structure on both sides of the low-pressure zone. The movement of the vortex group near the wall may be the main cause that induces the 1APF fluctuation.Zhipeng ZhuHoulin LiuMDPI AGarticlerim driven propulsion pumpexperimentnumerical simulationpressure fluctuationinner flowMechanical engineering and machineryTJ1-1570ENMachines, Vol 9, Iss 293, p 293 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rim driven propulsion pump experiment numerical simulation pressure fluctuation inner flow Mechanical engineering and machinery TJ1-1570
spellingShingle	rim driven propulsion pump experiment numerical simulation pressure fluctuation inner flow Mechanical engineering and machinery TJ1-1570 Zhipeng Zhu Houlin Liu Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet
description	The pressure fluctuation characteristics of a rim driven propulsion pump are studied by an experimental method firstly, and then its unsteady inner flow is studied by numerical simulation to reveal the generating mechanism of the pressure fluctuation. In the experiment, a monitoring point was set in a downstream region with a distance of 1D (D, Diameter of impeller) to the impeller. The monitoring point’s dominant frequencies within a low frequency band are 1APF (APF, Axial Passing Frequency) and 2APF. In the numerical simulation, the main fluctuation near the impeller region appears at 1BPF (BPF, Blade Passing Frequency) and as the monitoring point moves downstream, the amplitude becomes smaller. The 1BPF fluctuation nearly disappears when the distance exceeds 1D, and the main frequency moves to 1APF and 2APF, which is in good agreement with the experimental results in the low frequency band. The transient velocity, pressure and vorticity distribution were studied to reveal the causes of 1BPF, 1APF and 2APF fluctuation. The main cause of 1BPF is the jet from the tail of the blade and the main cause of 2APF is the movement of a large-scale double vortex structure on both sides of the low-pressure zone. The movement of the vortex group near the wall may be the main cause that induces the 1APF fluctuation.
format	article
author	Zhipeng Zhu Houlin Liu
author_facet	Zhipeng Zhu Houlin Liu
author_sort	Zhipeng Zhu
title	Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet
title_short	Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet
title_full	Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet
title_fullStr	Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet
title_full_unstemmed	Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet
title_sort	experimental research and numerical analysis of pressure fluctuation characteristics of rim driven propulsion pump outlet
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/dcb26e8b8e1943d29ffcd3520bb19c28
work_keys_str_mv	AT zhipengzhu experimentalresearchandnumericalanalysisofpressurefluctuationcharacteristicsofrimdrivenpropulsionpumpoutlet AT houlinliu experimentalresearchandnumericalanalysisofpressurefluctuationcharacteristicsofrimdrivenpropulsionpumpoutlet
_version_	1718411529451208704

Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet

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