2Velarde-Sandra.Numerical prediction of the aerodynamic tonal noise in a centrifugal fan[J].Experimental Thermal and Fluid Science,2002.26(5):421 -434.
3Ayder E,Van den Braembussche R A.Numerical analysis of the three-dimensional swirling flow in centrifugal compressor volute[J].ASME Journal of Turbomachinery,1998,116(2):462 ~ 468.