Influence of gas nucleus on scale effect of cavitation

Q3 Engineering 水力发电学报 Pub Date : 2005-01-01 DOI:10.1201/b16814-292
Wu Jianqiang
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引用次数: 1

Abstract

For the scale effect of cavitation test,the influence of gas nucleus on scale effect is analyzed in this paper.The effects of density,distribution and initial radius of gas nucleus on scale effect are analyzed respectively and the measures necessary for reduction of resulting scale effect are attained.At the same time,critical pressure is applied to replace the cavitation number defined by vaporization pressure and the relationship between initial dimension of gas nucleus and tensile strength of liquid is established to endeavor for eliminating the effects of tensile strength of liquid on scale effect.In order to eliminate scale effects of cavitation,some problems required to be paid attention to cavitation test are summarized to provide the references for actual test and prepared in further quest of complete and accurate simulation methods.
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气核对空化尺度效应的影响
针对空化试验的尺度效应,分析了气核对尺度效应的影响。分别分析了气核密度、分布和初始半径对结垢效应的影响,得出了减小结垢效应的必要措施。同时,用临界压力代替汽化压力定义的空化数,建立气核初始尺寸与液体抗拉强度的关系,力求消除液体抗拉强度对水垢效应的影响。为消除空化的尺度效应,总结了空化试验中需要注意的一些问题,为实际试验提供参考,为进一步寻求完整、准确的模拟方法做准备。
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来源期刊
水力发电学报
水力发电学报 Environmental Science-Water Science and Technology
CiteScore
2.90
自引率
0.00%
发文量
4781
期刊介绍:
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Improved design method of gradation band curves for granular filters New system for rapid measurement of indoor surface velocity fields based on feature matching velocimetry Experimental Study on Fracture Parameter of Three-Point Bending Beam Based on Smart Properties of CFRC Influence of gas nucleus on scale effect of cavitation
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