Computational Investigation and Optimization of Cooling System Used For Hub Motors

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The main aim of doing this project is to fix the strategy to provide the cooling for a hub motor so that there will be no effect on the copper windings of the motor while operating under variable load conditions. This works is carried out because of the fact that if the motor reaches the higher limits of its operating temperatures then the winding will get heated up and also there would be possibility of damage of the motor. So basically, we have proposed a fin attached casing from which the 30 numbers of fins are protrudes from the outer surface of hub motor and these fins are mounter in the open atmospheric condition considering the convectional heat transfer as low as possible based on the flow velocity of air and that is 5 W/m2K. Also, this value had been justified based on analytical approach followed in the study in order to find out the efficiency of the fins installed. We chose the casing material as stainless steel and fin material as aluminum because they have good thermal conductivity. The Computational investigation is carried out using ANSYS Module and the parameters i.e. Temperature distribution, Total heat flux and Directional heat flux were investigated based on the optimization technique followed based on two models that are a) Hub-Motor with Fin b) Hub-Motor without Fin. From the numerical investigation we achieved the Fin efficiency as 99%, followed by Heat dissipation from fin is 232.12 W and Fin effectiveness as 0.032 and hence results into an efficient model for the better cooling of the hub-motors of chosen dimension.