Abstract FLUENT software is used for the program of complex geometry flows and heat conduction, which provides unstructured grid generation procedure, the calculation of relatively complex geometry of the problem has become easier and easier. Gambit software is a professional pre-processor for CFD software In this paper, three leaves bearing is the research object, Using the Gambit software to establish clover bearing geometric model for the mesh, defining boundary conditions, then using FLUENT software to simulate and analyze the flow field of three leaves bearing, comparing the different parameters of the calculation,collating the various results to optimize the selection of the bearings.
Key words: three leaves bearing FLUENT Flow field calculation