Abstract：By applying the finite volume method by means of combination of structure and non-structure grids and the k-ε two equation model based on the theory of isotropic eddy viscosity,the flow field structure for the eccentric ball valve corresponding to different opening degree,the curves of discharge characteristics,the cavitation and the pressure recovery factor are obtained.The eddies at the section Y-Z and X-Z increase at the relative opening degree 0.75 of the eccentric ball valve.When the relative opening degree reaches to 0.5,the high velocity flow of the valve is ruptured,which is closely related with the macro performance.There are two symmetrical eddies which have the same intensity and opposite direction appeared in the section X-Y as the further reduction of the relative opening,which means that there is a large-scale 3D-flow in the valve body of the eccentric ball valve in the event of the small opening degrees.
冯卫民；肖光宇；宋立. 偏心球阀流场的数值模拟及性能预测[J]. 排灌机械工程学报, 2008, 26(4): 8-13.
FENG Wei-min, XIAO Guang-yu, SONG Li. Numerical simulation of flow field and performance prediction of eccentric ball valve. Journal of Drainage and Irrigation Machinery Engin, 2008, 26(4): 8-13.
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