The current numerical investigation is used to predict the dynamic performance of finite bearing considering the combined influence of turbulence regime and non-Newtonian flow. With appropriate assumptions, the Navier–Stokes and continuity equation have been revised by the linear turbulence and non-Newtonian fluid model together. The clearance space of the finite bearing has been determined by the finite element method adopting Galerkin’s procedure and robust iteration technique. The cylindrical coordinate forms of momentum and continuity equations are used for the flow field of the finite bearing assuming the turbulent regime and non-Newtonian lubricant. Dynamic performance parameters of a finite bearing have been computed regarding direct and cross-coupled fluid-film coefficients, equivalent stiffness coefficient, whirl ratio, and critical mass at different eccentricity ratios for distinct values of Reynolds numbers preferably up to 13,300 and varied values of non-linear factor of the non-Newtonian fluid model. The obtained results revealed the performance enhancement in the combined regime as compared to pure turbulence and non-Newtonian flow conditions. The stability of finite bearing is significantly improved under the proposed severe flow regime.

考虑湍流状态和非牛顿流的综合影响，目前的数值研究用于预测有限轴承的动力性能。在适当的假设下，Navier-Stokes和连续性方程已通过线性湍流和非牛顿流体模型一起进行了修正。有限轴承的游隙是通过采用Galerkin程序和鲁棒迭代技术的有限元方法确定的。假设湍流状态和非牛顿润滑剂，动量和连续性方程的圆柱坐标形式用于有限轴承的流场。计算了有限轴承的动态性能参数，这些参数涉及直接和交叉耦合的液膜系数，等效刚度系数，涡流比，对于不同的雷诺数值（最好高达13,300）和非牛顿流体模型的非线性因子的变化值，在不同的偏心率下的临界质量和临界质量。获得的结果表明，与纯湍流和非牛顿流动条件相比，组合方案的性能有所提高。在提出的严格流动条件下，有限轴承的稳定性得到了显着改善。