网格节点型有限体积法在滑动轴承润滑特性求解中的应用

本文采用网格节点型有限体积法求解二维瞬态雷诺方程,采用矢量化方法离散雷诺方程,从而构建并得到新的数值模型,该模型既有有限体积法守恒性的特点,又能适用于结构复杂的求解域.通过与相关算例的对比验证,证明了该模型可适用于滑动轴承润滑特性的研究,同时精度也可以得到保证;根据计算得到的压力分布特点,采用不同的网格类型和网格数量重新划分求解域,并对计算结果和时间进行了对比,结果表明可以采用不同的稀疏网格来提高计算效率;通过计算圆锥形织构轴承的压力分布,证实了该模型对复杂求解域的良好适用性.

Application of the Cell-vertex Finite Volume Method in the Solution of the Lubrication Characteristics of Journal Bearings

The cell-vertex finite volume method is presented to solve the transient Reynolds equation in this paper. The discretization of the Reynolds equation is based on the vectorization method and the lubrication region was meshed with unstructured grids, thus, this method can guarantee the conserva-tion of lubricant film in the clearance and has good adaptation in the regions with complex shape. The adaptation and accuracy of the presented algorithm are validated by some bearing models. The results show a good agreement with the reference values. According to the calculated pressure distribution, the number and types of the grids in the lubricated area are readjusted and the calculation time is com-pared as well. The pressure distribution of the journal bearing with circular cone textures is calculated and the results show that the pressure value on the circular boundary can be shown clearer when the unstructured grids are applied.