Numerical analysis of discharge coefficients in aerostatic bearings with orifice-type restrictors
Numerical analysis of discharge coefficients in aerostatic bearings with orifice-type restrictors
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DOI：
10.1016/j.triboint.2015.04.030
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发表时间：
2015-10
影响因子：
6.2
通讯作者：
S. H. Chang;C. W. Chan;Y. Jeng
中科院分区：
文献类型：
--
作者：
S. H. Chang;C. W. Chan;Y. Jeng
通过求解雷诺方程确定油膜压力比进行轴承实验或计算流体动力学模拟更有效。雷诺方程可以很容易地在数值模型中求解，但是，每个模型的精度取决于孔口流量系数。本文比较了两种孔板流动模型，研究了孔板几何参数和流动参数对流量系数的影响。结果表明，两种孔板流动模型均适用于固有孔板节流器，而节流器的流量系数对孔板直径和膜厚较为敏感。
Determining film pressure by solving the Reynolds equation is more effective than conducting bearing experiments or computational fluid dynamics simulations. The Reynolds equation can be solved easily in a numerical model; however, the accuracy of each model is dominated by the orifice discharge coefficient. This study compared two orifice flow models in inherent orifice restrictors and investigated the influences of geometry and flow parameters on the discharge coefficient. The results indicate that both orifice flow models can be used in inherent orifice restrictors, and the discharge coefficient of orifice-type restrictors is sensitive to the orifice diameter and film thickness.