高温风洞收集口对舱压试验匹配性影响的研究
Influence of the Collector on the Experimental Matching of Chamber Pressure in High Temperature Gas Flow Wind Tunnel
王彪 1曹知红 1李彦良 1田宁 1赵玲2
作者信息
- 1. 北京航天长征飞行器研究所,北京,100076
- 2. 北京航天长征飞行器研究所,北京,100076;清华大学航空发动机研究院,北京,100084
- 折叠
摘要
针对高温燃气流风洞试验中舱压不稳定可能造成试验设施损害的问题,从波系与分离涡之间相互干扰的角度,开展了扩压器的收集口位置和尺寸对舱压试验匹配性影响的机理研究.使用计算流体力学方法对不同收集口位置和尺寸的工况进行了模拟,得到了试验舱内的压力分布情况,研究了波系与分离涡之间的相互干扰对试验稳定运行的影响,为收集口的优化设计提供了参考.研究表明,合理的收集口位置和尺寸,能够增强波系与锥身后的分离涡的相互影响,避免分离涡主导收集口,增加主流的通流量,减小舱内溢流及其产生的回流涡的尺度,有利于试验的成功开展.
Abstract
Aiming at the damage problem of experimental facilities caused by unsteady chamber pressure in experiment of high temperature gas flow wind tunnel,the mechanism of the influence of collector positions and dimensions on the stability of experimental flow field is studied.Study mainly focuses on the interaction between the waves and separated vortexes.Utilizing CFD method,the pressure distribution is obtained in the chamber.Then the relationship between the interaction of the waves and separated vortexes and experimental stability are also explored,which will provide a reference for the optimal design of the collector.The results show that appropriate collector position and reasonable collector dimensions can reduce the overflow in the chamber.It can also avoid the separated vortex dominating the collector port,and increase the flow of mainstream.It is helpful to the conduction of experiment.
关键词
高温燃气流风洞/扩压器/收集口/舱压/波涡相互干扰Key words
high temperature wind tunnel/diffuser/collector/chamber pressure/interaction between waves and vortexes引用本文复制引用
出版年
2024
NETL
NSTL
万方数据