Effects of Hydrostatic Pocket Shape on the FlowPattern and Pressure Distribution
Effects of Hydrostatic Pocket Shape on the FlowPattern and Pressure Distribution
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DOI：
10.1155/s1023621x95000091
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发表时间：
1995
影响因子：
0.9
通讯作者：
M. Braun;M. Dzodzo
中科院分区：
文献类型：
--
作者：
M. Braun;M. Dzodzo
本文采用二维Navier-Stokes方程的无量纲公式对静压袋中的流动进行了数值模拟，该二维Navier-Stokes方程以原始变量形式表示，适用于体拟合坐标系，并通过配置网格应用。本质上，我们延续了Braun等人[1993a， 1993b]的工作，并将其扩展到研究袋形几何形式对流型和压力分布的影响。该模型一方面考虑了口袋流与有限长度馈线流之间的耦合，另一方面考虑了口袋及其邻近陆地之间的耦合。在这种情况下，我们将在比较的基础上，提出方形、斜面瑞利台阶和圆弧圆袋流道表面的流量和压力模式。几何上所有的口袋有相同的足迹，相同的土地长度，和相同的毛细管馈线。数值模拟采用基于盖（流道）速度的雷诺数和进口射流强度F作为动态相似参数。该研究旨在建立在静压轴承性能的大背景下优化口袋几何形状的标准。
The flow in a hydrostatic pocket is numerically simulated using a dimensionless formulation of the 2-D Navier-Stokes equations written in primitive variables, for a body fitted coordinates system, and applied through a collocated grid. In essence, we continue the work of Braun et al. 1993a, 1993b] and extend it to the study of the effects of the pocket geometric format on the flow pattern and pressure distribution. The model includes the coupling between the pocket flow and a finite length feedline flow, on one hand, and the pocket and its adjacent lands on the other hand. In this context we shall present, on a comparative basis, the flow and the pressure patterns at the runner surface for square, ramped-Rayleigh step, and arc of circle pockets. Geometrically all pockets have the same footprint, same lands length, and same capillary feedline. The numerical simulation uses the Reynolds number based on the lid(runner) velocity and the inlet jet strength F as the dynamic similarity parameters. The study aims at establishing criteria for the optimization of the pocket geometry in the larger context of the performance of a hydrostatic bearing.