CFD Thermal Analysis of Electromotor Frame

概要

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The contribution deals with the CFD (Computer Fluid Dynamics) thermal analysis of the electromotor frame performed with the aim to reach the better cooling ability of the electromotor cooling system. The first step before the optimization of cooling properties is to create the computer model which describes well the thermal processes in the motor and uses possibly highest number of simplifications leading to the shorter solution times. One possible approach how such a model can be created is described in this contribution. The mechanical and electrical components producing the heat during the operation of the electromotor are substituted by the heat fluxes applied on the walls of electromotor frame. The method how to locate places where the appropriate heat flux should be applied is presented. The approach is based of the iterative process whereas the surface temperatures of the electromotor frame are calculated via finite volume method for certain heat flux distribution and results are compared with values obtained by measurements via thermovision camera and thermoelements. The process is finished after the surface temperature corresponding to the real state is reached. This adjusted model is then expected to be used in the optimization process leading directly to the required reduction of the motor surface temperature and mass.