建立了径向轴承的三维热流体动力润滑模型,该模型涉及质量守恒广义Reynolds方程、三维能量方程和固体热传导方程的联立求解。在此基础上,对几个重要热边界条件的处理方式进行了深入的研究。结果表明,热边界条件的处理对径向轴承热流体动力润滑分析的结果有较大的影响,为了获得可靠的计算结果,应根据实际的操作工况合理地确定热边界条件。
A THD model of plain journal bearings was proposed herein. This model involved the synthetic solution of the generalized Reynolds equation, three-dimensional energy equation, and heat conduction equations of the solids. On the basis of that, series of results were provided to examine the effects of thermal boundary conditions. The results show the thermal boundary conditions have con- siderable effects on the THD analysis of plain journal bearings. Therefore, it is necessary to choose the thermal boundary conditions according to the actual operating conditions, so as to obtain reliable calculating results.