In the present paper,Navier-Stokes equation and RNG k-ε turbulence model are adopted to investigate the flow field coupled with porous medium in the integrated motor actuated by the thrust bearing,and Ergtm equation are applied for the flow in porous media based on ANSYS simulation platform.The results show that the spiral flow form in the gap between the rotor and the porous medium,and the flowrate in the gap is 0.071％ of the flowrate in the porous medium.The axisyrnmetric vortices in the radial channel inlet of thrust beating are captured,and these vortices deflect rotation direction by the action of rotation.Strong circulation flow exists in the field of thrust bearing outer ring.Meanwhile,Taylor vortices in the gap in front of the sliding beating near inlet and behind of the sliding bearing near outlet are observed clearly.Moreover,a pair of turbulent Taylor vortices in the inlet of gap between stator and rotor is predicted successfully.According to the numerical results,the vortices are quite complex in the complicated geometry,and the corresponding dissipation is relatively high.The related geometric parameters and structure of the motor can be optimized due to the high pressure loss between the thrust bearing and the sliding bearing.%本文采用ANSYS开展了推力轴承泵送流体在电机内循环流动的流场-多孔介质场的耦合数值研究.其中,湍流流动采用Navier-Stokes控制方程和RNG k-ε湍流模型,多孔介质内流动采用基于Ergun方程的数学模型.研究发现,转子与多孔介质两者间隙流体成螺旋形流动,此间隙流量约为多孔介质区域内流量的0.071％;预测到了推力轴承泵径向流道间的进口处的轴对称漩涡,其旋向与轴转向相同.同时,结果表明推力轴承外流场存在强环流;也很好地预测了两处滑动轴承前后的Taylor涡,以及电机动静转子间隙流入口处的失紊湍流Taylor涡对.预测结果表明,复杂几何结构内的漩涡比较复杂,相应引起的耗散比较大,尤其,推力轴承与滑动轴承间的压力损失很大,可考虑这些相关几何参数和结构的优化.
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