Empirical Formula for Thrust Bearing Based on Similarity Theory of Non¡MDimensional Criteria
Chen Zhilan,Yuan Xiaoyang,Wang Hailin,Zhu Jun
(School of Mechanical Engineering,Xi'an Jiaotong University, Xi'an 710049, China)

Abstract£ºAccording to the dimensional similarity theory, by using the linear regression method, the non¡Mdimensional empirical similarity correlation is set up to quantitatively simulate the lubrication performances of thrust bearing, on the base of the experiment lial data of thrust bearing test equipment. Moreover, the maximum temperature raise of pad, the maximum oil film pressure and the minimum oil film thickness for the huge thrust bearing in China Three-Gorge hydroelectric generating set are predicted. The results show that the data calculated by using empirical correlation is basically matched with that calculated by using three-imensional thermohydrodynamic lubrication theory. Since the similar conditions between the practice and experiment bearing were not completely satisfied, thereby certain error of predicting results exists.
Keywords£ºthrust bearing;lubrication performance;similarity theory;dimension analysis method