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[1]唐 虎,毕勤成.文丘里管汽蚀实验研究[J].火箭推进,2015,41(05):54-60.
　TANG Hu,BI Qincheng.Experimental study of cavitation in venturi[J].Journal of Rocket Propulsion,2015,41(05):54-60.
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文丘里管汽蚀实验研究

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 41 期数: 2015年05期 页码: 54-60 栏目: 研究与设计 出版日期: 2015-10-31
Title:
Experimental study of cavitation in venturi
作者:
唐 虎1; 毕勤成2
1 西安航天动力研究所，陕西 西安 710100； 2 西安交通大学 动力工程多相流国家重点实验室，陕西 西安 710049
Author(s):
TANG Hu1;  BI Qincheng2
1. Xi’an Aerospace Propulsion Institute, Xi’an 710100, China; 2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
关键词:
文丘里管;  汽蚀; 实验研究
Keywords:
venturicavitationexperimental study
分类号:
V434-34
文献标志码:
A
摘要:
设计了4种不同喉部尺寸的文丘里管，各文丘里管进行了不同入口压力、相同出口压力下的实验，对其中1种进行了不同温度下的实验，结果表明：随着入口压力的提高，文丘里管的流量系数呈缓慢下降趋势；水温达到某一值时，流量系数出现明显减小；在相同入口、出口压力下，喉部直径越大，汽蚀区越明显；入口压力越大，汽蚀区越明显；对水在一定温度范围内加温，汽蚀区没有明显变化；此外，实验中文丘里管汽蚀区呈现周期性变化。最后对其中1种文丘里管进行了数值模拟，试验中汽蚀区长度与计算值基本一致。
Abstract:
Four venturi tubes with different throat diameter were designed. Each venturi was tested at different inlet pressure and same outlet pressure. Heating experiment for a selected venturi was carried out at different temperature. The experimental results show that the venturi flow coefficient has a trend of slow decline with the increase of inlet pressure; the flow coefficient decreases quickly when water temperature reached a certain value; at same inlet pressure and outlet pressure, the larger the throat diameter is, the greater the cavitation area becomes; the higher the inlet pressure is, the greater the cavitation area; when water is heated in certain temperature range, the cavitation area doesn't vary remarkably. In addition, the cavitation area of venturi presented periodic variation during the experiment. The numerical simulation for flow field of a selected venturi was carried out, and the results were compared with those of the experiment. The results show that

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备注/Memo

收稿日期：2015-01-31；修回日期：2015-03-26 基金项目：中国航天科技集团公司支撑项目（2011JY09） 作者简介：唐虎（1977—），男，高级工程师，研究领域为液体火箭发动机系统设计

更新日期/Last Update: 1900-01-01