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Analysis of Impellers' Strength in the Flat Hydrodynamic Torque Converter for Passenger Car Based on CFD

A new analysis method was suggested based on the numerical solutions of the 3-dimensional flow field to analyze accurately the strength of impeller in the flat hydrodynamic torque converter for passenger car. The 3-dimensional flow govern equations were solved numerically by means of a computational fluid dynamics(CFD) software, and on the basis of the obtained numerical solution of the flow velocity field and the flow pressure field in the flat hydrodynamic torque converter, the strength of impeller can be derived. An application case of the new method was demonstrated, and the result of analysis was compared with that from the traditional method based on the 1-dimensional flow theory and the experimental result. The error of the result from the new method against the experimental result is less than traditional.