Four types of axial fans noise energy are measured and compared with prediction byvortex sheddying model(T.fukano). A correct factor is advised in case of large hub rotor ormore blades and big assemble angle.
This paper is to calculate the fully 3D steady flow in a centrifugal rotor by time marching finite volumn method. The use of a nonoverlapping grid makes resulting process simpler,faster, and more accurate. A distribut...