燃油射流横流穿透深度试验和数值模拟  

Numerical Simulation and Experimental Analysis of the Penetration Depth of Fuel Jet in Cross-Flow

作　　者：刘重阳[1] 冯大强[1] 钟华贵[1] 王秀兰[1] 

机构地区：[1]中国燃气涡轮研究院,四川江油621703

出　　处：《燃气涡轮试验与研究》2013年第5期16-22,共7页Gas Turbine Experiment and Research

基　　金：航空科学基金自由探索类(2007ZB2401)

摘　　要：采用激光粒子成像测速仪(PIV),试验研究了不同动量比下燃油射流在横向空气流中的穿透深度特性。同时,采用数值计算方法,对射流穿透特性进行了模拟,并将试验和计算结果,分别与已有的经验关系式,及考虑气动韦伯数影响修改后的关系式进行对比。结果表明:燃油射流上边界深度与幂指数关系式较吻合;采用VOF两相流模型能较准确地模拟出燃油射流的喷雾核心深度;修改后的关系式与不同燃油-空气动量比范围下的喷雾核心深度较吻合;燃油-空气动量比和气动韦伯数,是影响燃油射流横流穿透深度的主要参数。The Particle Image Velocity （PIV） was used to test and study the penetration characteristics of fu- el jet in air cross-flow under different fuel-air momentum ratio conditions. Furthermore, the numerical sire- the aerodynamic We agrees well with the depth of spray core; r number was calculated. The results indicate that the upper surface depth of fuel jet ponential c e modified ent fuel-air momentum ratio; parameters that affect the pen orrelation; the VOF expressions coincid fuel-air momentum etration depth of fuel jet model can be used to exactly simulate the pene e with the penetration depth of spray core with ratio and aerodynamic Weber number are the p in cross-flow. differ- rimary

关 键 词：燃油射流 穿透深度 PIV 试验 数值模拟 LPP低污染燃烧室 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]