For the NSK7209C angular contact ball bearing,a grid model of the overall fluid-solid structure of the bearing is divided based on the MRF model.A thermal-fluid coupling analysis model of the rolling bearing is established based on the CFD simulation,and a rolling bearing temperature rise test rig is built to verify the numerical simulation method.The results show that the overall temperature rise of the bearing increases with the increase of the rotational speed.According to the comparison of the temperature rise obtained from simulation and experiment measurement,the variation of temperature rise is consistent with lesser difference,and the experimental temperature is slightly higher than the temperature from simulation,with the maximum difference of temperature rise less than 3 K,which verifies the accuracy of simulation model.
关键词
滚动轴承/温度场/数值模拟
Key words
rolling bearing/temperature field/numerical simulation
维普
万方数据