摘要
分析了弯扭联合气动成型叶片控制二次流的机理.采用这种叶片可以在根部产生逆压力梯度,使端部边界层减薄和清除靠近吸力面的角隅区边界层堆积,从而能提高叶轮机械效率.实验和三维理论计算均表明了这一结果.
This paper discusses the mechanism of controlling secondary flow by simultaneously vaulted and twisted blades, which can effect a negative pressure gradient at blade root, reduce the boundary layer at blade edge and eliminate its pilling up on the suction side surface, thus improving turbomachinary's efficiency. Experimental tests and 3-D calculation provide validations. Figs 5 and refs 14.
出处
《动力工程》
CSCD
1992年第6期1-6,共6页
Power Engineering
