内部冲击构型对气冷涡轮气热耦合计算影响的对比研究  

Study on The Influence of Internal Impingement Configuration on Conjugate Heat Transfer Calculation of Air-Cooled Turbines

作　　者：李守祚 罗磊[1] 王松涛[1] LI Shouzuo;LUO Lei;WANG Songtao(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150006,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150006

出　　处：《工程热物理学报》2023年第3期634-640,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.52076053)。

摘　　要：为了评估复杂冷却涡轮内部冷却结构变化对涡轮气动及传热性能的影响,本文采用气热耦合计算方法对三种具有不同内部冲击结构的高压导叶进行了研究。分析了无冲击冷却结构、冲击挡板结构以及冲击套筒结构对涡轮气动及传热性能的影响规律。结果表明:在气动性能方面,无冲击冷却结构方案总流量最大,带有冲击套筒结构方案最小,同时涡轮气动效率也会随着内部结构的变化而变化;在传热方面,通过对比可以发现两种冲击方案都会对叶片表面最大温度进行降低,但冲击套筒结构方案同时还能够降低叶片表面平均温度。To evaluate the effects of changes in the internal cooling structure of complex cooling turbines on the aerodynamic and heat transfer performance of turbines,three high-pressure guide vanes with different internal impact structures are studied using a conjugate heat transfer calculation.The effects of impingement structures on the aerodynamic and heat transfer performance of turbines are analyzed.The results show that:In terms of aerodynamic performance,the total flow rate of the structure without impingement is the largest,and the structure with impingement sleeve is the smallest.At the same time,the aerodynamic efficiency of the turbine also changes for different internal structure.In terms of heat transfer,it can be found that both impingement cases can reduce the maximum temperature on the blade surface,but the impingement sleeve structure case can also reduce the average temperature on the blade surface.

关 键 词：气热耦合 冷却涡轮 气动性能 传热性能 

分 类 号：TK123[动力工程及工程热物理—工程热物理]