高速回転二重円筒の熱伝達計算

抄録

In a highly rotating electric motor, spatial and temporal harmonics in the magnetic field generate a vast amount of heat in the rotor. Fast elimination of this heat from the rotor is the key factor for designing the electric motor. In order to simulate the heat transfer of the motor rotor, we have built a thermal network model of highly rotating concentric cylinders and set up the test equipment. Measurement of the flow condition and the resulting Nusselt number of the narrow gap between the two cylinders validate our heat transfer model. This model gives us a swift and simple calculation tool for designing a highly rotating electric motor.