摘要
采用具有TVD性质的三阶精度Godunov格式 ,数值模拟了某型涡轮高压导叶流场 ,并对流场损失及涡系结构进行分析 ,结果表明由于强烈的径向窜流 ,使低能流体大量地迁移到下端壁 ,使得下端部的损失显著增大 ,从而引起了总损失的增加。因此在高压导叶设计中 ,当采用低展弦比叶片时 ,应注意削弱叶片出口附近流场的严重径向窜流。
The viscous flow field in a high-pressure gas turbine guide vane was simulated by three order accuracy GODUNOV scheme with TVD property. The results indicate that a lot of low energy flow accumulated in the hub region since the radial movement of the secondary flow. Those above result in the increase of energy loss near the hub and even increase the total energy loss. Therefore when using low aspect ratio blade during the design of high pressure guide vane, attention should be made in order to obstruct the radial movement of the secondary flow.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2001年第3期229-232,共4页
Journal of Propulsion Technology
基金
国家自然科学基金 !(5 96 36 180 )
科技部 973资助项目
