Study on Factors Affecting Cavitation Effect in Venturi Tube

SHAO Jun peng; LIU Ya nan

doi:10.15938/j.jhust.2020.03.019

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Study on Factors Affecting Cavitation Effect in Venturi Tube

更新时间：2026-08-31

- Study on Factors Affecting Cavitation Effect in Venturi Tube
- Vol. 25, Issue 3, Pages: 122-130(2020)
- 作者机构：
  
  哈尔滨理工大学机械动力工程学院,哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：10.15938/j.jhust.2020.03.019
  CLC： TL334
- Published：2020
- 稿件说明：
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SHAO Jun peng, LIU Ya nan. Study on Factors Affecting Cavitation Effect in Venturi Tube[J]. 2020, 25(3): 122-130.
DOI：

SHAO Jun peng, LIU Ya nan. Study on Factors Affecting Cavitation Effect in Venturi Tube[J]. 2020, 25(3): 122-130. DOI： 10.15938/j.jhust.2020.03.019.

摘要

摘要:以文丘里管空化发生器为对象，通过考虑水中空气析出与消解过程的时变性，建立了水气两相的动态空化模型。运用FLUENT软件对水气两相流流动问题进行三维数值模拟研究，获得了文丘里管喉口直径、进口压力以及串联文丘里管等对汽含率变化产生影响的规律。数值模拟结果与实验相对比表明，汽含率随进口压力增加而增加，但并非无限增加，存在极限值；随着喉径的增加，文丘里管的空化效果逐渐减弱；相同条件下，串联文丘里管的空化效果不如单个文丘里管的空化效果

即串联文丘里管不能实现两级空化。以上研究对文丘里管的工程应用具有重要意义。

Abstract

Abstract:The dynamic cavitation model of airwatertwophase flow was established according to the time variation of airprecipitation and digestion process in water

which was used in FLUENT threedimensionnumerical simulation to simulate the airwater twophase flow

and the variationlaw of venturi tube throat diameter、inlet pressure and tandem venturi on vaporvolume fraction were obtained The results of numerical simulation andexperiments show that the vapor volume fraction increases with pressureincreasing，Butnot infinitely increasing

there are limits;As the throat diameter increases

the cavitation effect of the venturi tube gradually decreases;Under the sameconditions

the cavitation effect of the tandem venturi is not as good as thecavitation effect of a single venturi

that is

the twostage cavitation cannotbe realized by the tandem venturiThe above research is of great significance tothe engineering application of venturi tubes

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