压气机静叶气封几何优化与流动分析  

COMPRESSOR STATOR SEAL CAVITY GEOMETRY OPTIMIZATION AND FLOW ANALYSIS

作　　者：马文生[1] 禄堃[1] 顾春伟[1] 

机构地区：[1]清华大学热能工程系热科学与动力工程教育部重点实验室,北京100084

出　　处：《工程热物理学报》2009年第8期1288-1290,共3页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划资助(No.2007CB210105)

摘　　要：为了削弱静叶叶根气封间隙流对压气机性能的不利影响,在分析该间隙流特点的基础上提出了相应的优化方法,即增加上游气封口处的几何削角来控制泄漏流与主流的相互作用,削弱其对主流流动的干扰。结合优化前后计算结果的比较得出,优化后气封泄漏流与主流流动的掺混位置更接近气封槽内迁移,泄漏流引起的阻塞减少,损失减小,静叶排的性能提高。多个不同削角的计算比较表明存在一最佳削角约为25°,此时三排叶片的效率提高0.47%。In order to weaken the hurt of seal cavity flow to compressor performance, cavity geometroy is optimizied through shearing the hub corner to control the interaction between leakage flow and mainflow. Numerical simulation results present that optimization case shows a improvement including a lower mixing location, thinner boundary layer, reducing blockage and loss, a smaller separation and enhanced stator operation. The comparasion of several cases with different shear angle shows the angle 25 degree is an optimized shear angle, and its efficiency of the case is 0.47%higher than the case before optimization.

关 键 词：压气机 气封间隙流 几何优化 数值模拟 

分 类 号：TK123[动力工程及工程热物理—工程热物理]