新的多重网格法求解轴流压气机内部流场

A New Multi- Grid Schems for Axial Flow Inside a Compressor

提出了一种新的与显式时间推进法、有限体积差分格式、粘性体积力法有效地配合使用的多重网格法来求解叶轮机械可压流动。通过对美国 NASA37#跨音速轴流压气机转子内部流场的数值计算表明 ,多重网格法的计算结果与试验结果吻合良好 ,该多重网格法的收敛速度比不用多重网格法加快了 1 .

This paper puts forward a new multiple gird scheme,which is used with the combination of explicittime marching method、finite volume difference code and distributed body force.The calculation of the flow field inside the transonic compressor rotor shows that the author’s multi- grid scheme increases the converging speed by about one and a half times and thatthe calculation results fitfairly well with the measurement