3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model

In order to understand the complex nature of the system dynamic phenomena, such as the strong vibration and noise caused by blade passage in the pump turbine, a state-of-the-art three-dimensional (3D) compressible transient simulation would be desirable to study the problem in depth. This study inve...

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Autores principales:	Yujian Fang, Ping Huang, Shibing Jin, Demin Liu, Jinfeng Zhang, Shouqi Yuan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	phase resonance CFD simulation compressible flow pump turbine wave propagation full load Technology T
Acceso en línea:	https://doaj.org/article/971b072057214d04a344bf07b76a4c3c
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id	oai:doaj.org-article:971b072057214d04a344bf07b76a4c3c
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spelling	oai:doaj.org-article:971b072057214d04a344bf07b76a4c3c2021-11-25T17:26:24Z3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model10.3390/en142275391996-1073https://doaj.org/article/971b072057214d04a344bf07b76a4c3c2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7539https://doaj.org/toc/1996-1073In order to understand the complex nature of the system dynamic phenomena, such as the strong vibration and noise caused by blade passage in the pump turbine, a state-of-the-art three-dimensional (3D) compressible transient simulation would be desirable to study the problem in depth. This study investigated the phase resonance (PR) that occurred during a full-load operation in the turbine mode of a pump turbine on a prototype scale. As a first step, the wave reflection at the boundaries, and the influence of the timestep and sound speeds on the behavior of traveling pressure waves inside a spiral casing, were studied. It was found that nonreflective boundary conditions and an appropriately small timestep are critical to capturing the wave reflection and superposition process inside a spiral casing; a certain kind of direct PR risk was detected in its system design. The detected direct PR differed from the well-known PR with two features: firstly, it was almost independent of the sound speeds, and secondly, the pressure distribution over the spiral circumference varied among the amplitudes. The latter feature was caused by pressure waves at every stator channel induced by a rotor stator interaction (RSI). The 3D flow simulation with an acoustic model, which couples the RSI and PR phenomena, would predict better results for understanding the problem than the simplified one-dimensional (1D) method.Yujian FangPing HuangShibing JinDemin LiuJinfeng ZhangShouqi YuanMDPI AGarticlephase resonanceCFD simulationcompressible flowpump turbinewave propagationfull loadTechnologyTENEnergies, Vol 14, Iss 7539, p 7539 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	phase resonance CFD simulation compressible flow pump turbine wave propagation full load Technology T
spellingShingle	phase resonance CFD simulation compressible flow pump turbine wave propagation full load Technology T Yujian Fang Ping Huang Shibing Jin Demin Liu Jinfeng Zhang Shouqi Yuan 3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model
description	In order to understand the complex nature of the system dynamic phenomena, such as the strong vibration and noise caused by blade passage in the pump turbine, a state-of-the-art three-dimensional (3D) compressible transient simulation would be desirable to study the problem in depth. This study investigated the phase resonance (PR) that occurred during a full-load operation in the turbine mode of a pump turbine on a prototype scale. As a first step, the wave reflection at the boundaries, and the influence of the timestep and sound speeds on the behavior of traveling pressure waves inside a spiral casing, were studied. It was found that nonreflective boundary conditions and an appropriately small timestep are critical to capturing the wave reflection and superposition process inside a spiral casing; a certain kind of direct PR risk was detected in its system design. The detected direct PR differed from the well-known PR with two features: firstly, it was almost independent of the sound speeds, and secondly, the pressure distribution over the spiral circumference varied among the amplitudes. The latter feature was caused by pressure waves at every stator channel induced by a rotor stator interaction (RSI). The 3D flow simulation with an acoustic model, which couples the RSI and PR phenomena, would predict better results for understanding the problem than the simplified one-dimensional (1D) method.
format	article
author	Yujian Fang Ping Huang Shibing Jin Demin Liu Jinfeng Zhang Shouqi Yuan
author_facet	Yujian Fang Ping Huang Shibing Jin Demin Liu Jinfeng Zhang Shouqi Yuan
author_sort	Yujian Fang
title	3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model
title_short	3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model
title_full	3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model
title_fullStr	3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model
title_full_unstemmed	3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model
title_sort	3d cfd simulation of phase resonance in a pump turbine with an acoustic model
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/971b072057214d04a344bf07b76a4c3c
work_keys_str_mv	AT yujianfang 3dcfdsimulationofphaseresonanceinapumpturbinewithanacousticmodel AT pinghuang 3dcfdsimulationofphaseresonanceinapumpturbinewithanacousticmodel AT shibingjin 3dcfdsimulationofphaseresonanceinapumpturbinewithanacousticmodel AT deminliu 3dcfdsimulationofphaseresonanceinapumpturbinewithanacousticmodel AT jinfengzhang 3dcfdsimulationofphaseresonanceinapumpturbinewithanacousticmodel AT shouqiyuan 3dcfdsimulationofphaseresonanceinapumpturbinewithanacousticmodel
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3D CFD Simulation of Phase Resonance in a Pump Turbine with an Acoustic Model

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