Abstract
Due to that high current density on the component compared with other industrial motor is applied, one must take care on heat transfer system to design motor of an Electric Vehicle (EV). Excessively heat generation may cause irreversible fail effect such as demagnetization and burnout of mounted coils. We attempted to simulate flow inside model of an EV motor according to the way that field of the flow can be separated into narrow "gap" and "rotor end part" focusing to pressure on boundary of the system. Pressure field of flow shows that possibility to control heat transfer between both regions because of sensitively with boundary wall on which vortex seemed like Taylor-Couette flow is generated.
