The stagger grid is used in the region between the impeller exit and diffuser inlet to guarantee accurate simulation.
为了保证计算精度，叶轮出口和扩压器间流动划分成多段交错网格进行计算。
A two-dimensional incompressible diffuser flow was numerically simulated employing no staggered grid arrangement and incompressible SIMPLE method to solve GAO-YONG turbulence equations.