摘要
采用时间相关法将描述湿蒸汽凝结流动的气-液两相控制方程进行耦合求解。采用Moses等提供的实验数据对缩放喷管算例进行了数值校验,验证了数值模型的可信度和准确性。在此基础上,对蒸汽引射流场内的水蒸汽凝结问题进行了数值仿真,结果表明:适当地提高引射总温、降低引射总压,可以减少流场中蒸汽的凝结量,同时也能降低凝结带来的性能损失。
The time-dependent method of computational fluid dynamics is applied to solve the control equations of gas phase and liquid phase, which describes wet steam condensation flow. Quantitative validation of the numerical model is accomplished by using the test data by Moses and the results showed a good agreement between numerical simulation and test. Then, the subscale hot steam ejecting system is preliminarily designed and predicted numerically. The results show that a increased vapour total pressure and a decreased vapour total temperature properly can decrease the mass fraction of condensation water and reduce performance loss of steam ejector with condensation.
出处
《导弹与航天运载技术》
北大核心
2010年第1期39-43,共5页
Missiles and Space Vehicles
关键词
超声速环形引射器
湿蒸汽
凝结
数值模拟
Annular supersonic ejector
Wet steam
Condensation
Numerical simulation
