吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (3): 744-751.doi: 10.13229/j.cnki.jdxbgxb20170171

• Orginal Article • Previous Articles     Next Articles

Numerical simulation of flow and heat transfer in journal bearing lubrication

SUN Zheng, HUANG Yu-qi, YU Xiao-li   

  1. College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2017-05-08 Online:2018-05-20 Published:2018-05-20

Abstract: In the simulation of hydrodynamics lubrication using CFD based methods, cavitation model has remarkable influence on the simulation results. In this paper, a full-cavitation model is introduced to improve the current CFD based methods. The influences of different cavitation treatment methods on the distributions of pressure and temperature are studied. Further, the applicability and accuracy between Reynolds and CFD based methods are compared. The results show that the accuracy of the maximum pressure is improved up to 12.1%, and the overall pressure distribution is also more close to the experimental data. The temperature distribution with the full-cavitation model is more realistic. However, in modeling the bubble collapsing process, the current full-cavitation model needs to be improved when calculating the temperature distribution in the cavitation area.

Key words: power mechinery and engineering, engineering thermophysics, journal bearing, computational fluid dynamics(CFD), cavitation, phase change and heat transfer

CLC Number: 

  • TK414
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