PIV analysis of cavitation flow characteristics of HeII

被引：0
|
作者：
Harada, K. [1 ]
Murakami, M. [1 ]
机构：
[1] Univ Tsukuba, Grad Sch Syst & Informat Engn, Tsukuba, Ibaraki 3058573, Japan
来源：
ADVANCES IN CRYOGENIC ENGINEERING, VOLS 51A AND B | 2006年 / 823卷
基金：
日本学术振兴会;
关键词：
cavitation; flow pattern; void fraction;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In the present experimental study cavitation phenomena in both He I and He II flows were investigated through the application of the PIV technique and visual observation under the saturated vapor pressure condition. The cavitation flow was generated in the downstream regions of a Venturi channel and a converging jet nozzle driven by a contracting metal bellows. It is seen that cavitation inception is a kind of stochastic process and has definite temperature dependence. The spatial distribution of the cavitation bubble velocity is measured by using the PIV technique.. Some differences in the cavitating flow pattern and the void fraction are found between He II and He I cavitating flows. The PIV result indicates that the void fraction for He II flow is larger than that for He I flow.
引用
收藏
页码：1677 / +
页数：2
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