Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model

Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model

In this paper, the seven-equation two-fluid flow model is streamlined to a five-equation numerical calculation method. This method is applied to predict the wave attenuation of the cavitation jet. Compared with 9 different experimental schemes in two separate laboratories, it is found that the veloc...

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Main Authors: You Fu, Zhaopeng Xie, Weiguo Zhao
Format: Article
Language:English
Published: Hindawi Limited 2020-01-01
Series:Mathematical Problems in Engineering
Online Access:http://dx.doi.org/10.1155/2020/4150691
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spelling doaj-6ad35ef30e6249cd9bed24a180439ec92020-11-25T00:35:11ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472020-01-01202010.1155/2020/41506914150691Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid ModelYou Fu0Zhaopeng Xie1Weiguo Zhao2School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaIn this paper, the seven-equation two-fluid flow model is streamlined to a five-equation numerical calculation method. This method is applied to predict the wave attenuation of the cavitation jet. Compared with 9 different experimental schemes in two separate laboratories, it is found that the velocity flow characteristics are different from normal transient flow when the cavitation jet is formed in the pipeline. Such a difference in velocity flow characteristics will cause changes in the prediction deviation of pressure response time and amplitude. A numerical method for predicting the attenuation of pressure fluctuation with the cavitation jet is presented taken into account these flow characteristics. In this method, the unsteady friction model is opened after the jet wave transmits 3–5 cycles, and the cavitation jet wave attenuation is well simulated. This calculation method could provide a research basis for pipeline leakage, vibration, noise, and other fields that need accurate pressure signals.http://dx.doi.org/10.1155/2020/4150691
collection DOAJ
language English
format Article
sources DOAJ
author You Fu
Zhaopeng Xie
Weiguo Zhao
spellingShingle You Fu
Zhaopeng Xie
Weiguo Zhao
Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model
Mathematical Problems in Engineering
author_facet You Fu
Zhaopeng Xie
Weiguo Zhao
author_sort You Fu
title Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model
title_short Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model
title_full Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model
title_fullStr Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model
title_full_unstemmed Prediction Method of Cavitation Jet Wave Attenuation Based on Five-Equation Two-Fluid Model
title_sort prediction method of cavitation jet wave attenuation based on five-equation two-fluid model
publisher Hindawi Limited
series Mathematical Problems in Engineering
issn 1024-123X
1563-5147
publishDate 2020-01-01
description In this paper, the seven-equation two-fluid flow model is streamlined to a five-equation numerical calculation method. This method is applied to predict the wave attenuation of the cavitation jet. Compared with 9 different experimental schemes in two separate laboratories, it is found that the velocity flow characteristics are different from normal transient flow when the cavitation jet is formed in the pipeline. Such a difference in velocity flow characteristics will cause changes in the prediction deviation of pressure response time and amplitude. A numerical method for predicting the attenuation of pressure fluctuation with the cavitation jet is presented taken into account these flow characteristics. In this method, the unsteady friction model is opened after the jet wave transmits 3–5 cycles, and the cavitation jet wave attenuation is well simulated. This calculation method could provide a research basis for pipeline leakage, vibration, noise, and other fields that need accurate pressure signals.
url http://dx.doi.org/10.1155/2020/4150691
work_keys_str_mv AT youfu predictionmethodofcavitationjetwaveattenuationbasedonfiveequationtwofluidmodel
AT zhaopengxie predictionmethodofcavitationjetwaveattenuationbasedonfiveequationtwofluidmodel
AT weiguozhao predictionmethodofcavitationjetwaveattenuationbasedonfiveequationtwofluidmodel
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