跨音风扇顶部激波、泄漏流作用的数值研究  

NUMERICAL SIMULATION STUDY ON THE EFFECT OF TIP CLEARANCE ON PERFORMANCE OF A TRANSONIC AXIAL FAN

作　　者：姜斌 王松涛[1] 孙玺淼[1] 王仲奇[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《工程热物理学报》2008年第10期1653-1656,共4页Journal of Engineering Thermophysics

基　　金：国家科技部973项目支持(No.2007CB210104)

摘　　要：本文针对一小展弦比、大稠度带有串列静叶的现代小型跨音速风扇级,采用数值模拟的方法研究了动叶顶部间隙大小对风扇转子设计点性能的影响。分别对动叶顶部相对间隙大小为0%、0.132%、0.396%、0.66%、1.32%五种情况进行了数值模拟。计算结果表明,随着动叶叶顶间隙的增加,风扇性能变化显著。动叶顶部间隙对跨音速风扇顶部激波、激波边界层相互作用都会产生影响。叶顶区域的阻塞与高损失与叶顶间隙的大小、泄漏流的强弱有着十分密切的联系。A numerical study on the effect of different tip clearance size on the performance of a low aspect ratio transonic fan with tandem cascade has been carried through. Five different levels of relatively tip clearances are 0%, 0.132%, 0.396%, 0.66%, 1.32% respectively. The result indicates that with the increase of tip clearance size, the performance of fan stage changes obviously. Tip clearance influences shock and interaction between shock and boundary layer near the tip for transonic fan/compressor. The block and loss at tip region has great important relation with the leakage flow.

关 键 词：跨音速风扇 叶顶间隙 数值模拟 

分 类 号：TK474.7[动力工程及工程热物理—动力机械及工程]