The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump

A large-scale, vaned-voluted centrifugal pump can be applied as the key component in water-transfer projects. Pressure pulsation will be an important factor in affecting the operation stability. This paper researches the propagation and spatial distribution law of blade passing frequency (BPF) and i...

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Autores principales:	Zhaoheng Lu, Ran Tao, Faye Jin, Puxi Li, Ruofu Xiao, Weichao Liu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pressure pulsation centrifugal pump Reynolds-averaged method pulsation propagation law blade passing frequency Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/59eb2f76afad402d8307631a67696a32
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spelling	oai:doaj.org-article:59eb2f76afad402d8307631a67696a322021-11-25T18:12:09ZThe Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump10.3390/machines91102662075-1702https://doaj.org/article/59eb2f76afad402d8307631a67696a322021-11-01T00:00:00Zhttps://www.mdpi.com/2075-1702/9/11/266https://doaj.org/toc/2075-1702A large-scale, vaned-voluted centrifugal pump can be applied as the key component in water-transfer projects. Pressure pulsation will be an important factor in affecting the operation stability. This paper researches the propagation and spatial distribution law of blade passing frequency (BPF) and its harmonics on the design condition by numerical simulation. Experimental and numerical monitoring is conducted for pressure pulsation on four discrete points in the vaneless region, which shows that the BPF is dominant. The pulsation tracking network (PTN) is applied to research propagation law and spatial distribution law. It provides a reference for frequency domain information and visualization vaned diffuser. The amplitude of BPF and its harmonics decays rapidly in the vaneless region. BPF and BPF’s harmonics influence each other. BPF has local enhancement in the vaneless region when its harmonics attenuate. In the vaned diffuser, the pulsation amplitude of BPF attenuates rapidly, but the local high-pressure pulsation amplitude can be found on the vane blade concave side because of obstruction and accumulation of the vaned diffuser. In the volute, the pulsation amplitude of BPF is low with the decelerating attenuation. This study provides an effective method for understanding the pressure pulsation law in turbomachinery and other engineering flow cases.Zhaoheng LuRan TaoFaye JinPuxi LiRuofu XiaoWeichao LiuMDPI AGarticlepressure pulsationcentrifugal pumpReynolds-averaged methodpulsation propagation lawblade passing frequencyMechanical engineering and machineryTJ1-1570ENMachines, Vol 9, Iss 266, p 266 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pressure pulsation centrifugal pump Reynolds-averaged method pulsation propagation law blade passing frequency Mechanical engineering and machinery TJ1-1570
spellingShingle	pressure pulsation centrifugal pump Reynolds-averaged method pulsation propagation law blade passing frequency Mechanical engineering and machinery TJ1-1570 Zhaoheng Lu Ran Tao Faye Jin Puxi Li Ruofu Xiao Weichao Liu The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump
description	A large-scale, vaned-voluted centrifugal pump can be applied as the key component in water-transfer projects. Pressure pulsation will be an important factor in affecting the operation stability. This paper researches the propagation and spatial distribution law of blade passing frequency (BPF) and its harmonics on the design condition by numerical simulation. Experimental and numerical monitoring is conducted for pressure pulsation on four discrete points in the vaneless region, which shows that the BPF is dominant. The pulsation tracking network (PTN) is applied to research propagation law and spatial distribution law. It provides a reference for frequency domain information and visualization vaned diffuser. The amplitude of BPF and its harmonics decays rapidly in the vaneless region. BPF and BPF’s harmonics influence each other. BPF has local enhancement in the vaneless region when its harmonics attenuate. In the vaned diffuser, the pulsation amplitude of BPF attenuates rapidly, but the local high-pressure pulsation amplitude can be found on the vane blade concave side because of obstruction and accumulation of the vaned diffuser. In the volute, the pulsation amplitude of BPF is low with the decelerating attenuation. This study provides an effective method for understanding the pressure pulsation law in turbomachinery and other engineering flow cases.
format	article
author	Zhaoheng Lu Ran Tao Faye Jin Puxi Li Ruofu Xiao Weichao Liu
author_facet	Zhaoheng Lu Ran Tao Faye Jin Puxi Li Ruofu Xiao Weichao Liu
author_sort	Zhaoheng Lu
title	The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump
title_short	The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump
title_full	The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump
title_fullStr	The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump
title_full_unstemmed	The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump
title_sort	temporal-spatial features of pressure pulsation in the diffusers of a large-scale vaned-voluted centrifugal pump
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/59eb2f76afad402d8307631a67696a32
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The Temporal-Spatial Features of Pressure Pulsation in the Diffusers of a Large-Scale Vaned-Voluted Centrifugal Pump

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