吸力面吹气抑制高负荷叶栅角区分离的数值研究  

Numerical Study on the Control of Corner Separation in a Highly-loaded Compressor Cascade by Suction-surface Blowing

作　　者：李秀香[1] 徐惠坚[2] 王泽[3] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046 [2]哈尔滨商业大学,哈尔滨150028 [3]哈尔滨工业大学,哈尔滨150001

出　　处：《汽轮机技术》2017年第2期128-130,共3页Turbine Technology

摘　　要：为提升高负荷扩压叶栅的气动性能,应用吸力面吹气对其角区分离流动进行抑制。利用数值模拟的方法,详细探讨了4种吹气动量系数对高负荷扩压叶栅流场以及损失的影响。计算结果表明,原型高负荷叶栅内部流动复杂。应吸力面吹气可有效减小叶栅气动损失,提升叶栅负荷,降低端区流动堵塞。高吹气动量系数方案对流场改善效果更为明显,角区分离尺度大幅度缩小,但计及吹气功耗时,损失反而较高。In order to improve the aerodynamic performance of a highly - loaded compressor cascade, the suction-surface blowing is implemented to control its comer separation. The influence of four kinds of blowing coefficients on the flowfiled and loss of the highly-loaded compressor cascade was studied in detail by numerical method. As a result, flow within the cascade is rather complex. The suction - surface blowing can be used to decrease the aerodynamic loss of compressor cascade, increase the blade loading and alleviate the endwall blockage effectively. The scheme with high blowing coefficient has a more prominent ability to improve the flowfiled within the cascade and the comer separation is decreased largely, however, the loss is much higher as the power consumption of blowing is considered.

关 键 词：吸力面吹气 高负荷叶栅 数值模拟 

分 类 号：TK474.811[动力工程及工程热物理—动力机械及工程]