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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >COMBINED NAVIER-STOKES AND BULK-FLOW ANALYSIS OF HYBRID BEARINGS: RADIAL AND ANGLED INJECTION
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COMBINED NAVIER-STOKES AND BULK-FLOW ANALYSIS OF HYBRID BEARINGS: RADIAL AND ANGLED INJECTION

机译：混合轴承的组合Navier-Stokes和本体流量分析：径向和角度注射

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摘要

The present work deals with the Navier-Stokes and bulk-flow analysis of hybrid bearings intended for use in aerospace applications. These bearings are expected to work at high rotational speeds and high feeding pressures. In such a case, the pressure in the shallow pockets of the bearing is no longer constant and is influenced by hydrostatic and hydrodynamic effects. It has been shown in the literature that the recess pressure pattern can have an important influence on the dynamic characteristics of the bearing. The present work investigates the pressure field in the recess of centered hybrid bearings with radial and angled injection by using a numerical Navier Stokes analysis. The recess pressure pattern is then subsequently characterized by combining these results with some parametric descriptions. For calculating the dynamic characteristics of the bearing, the parametric pressure pattern is then injected into a bulk-flow model that is an alternative analysis of the one introduced by San Andres. In order to evaluate the validity of the bulk-flow code, the numerical predictions are compared with experimental data taken from the literature for radial and angled injection. The favorable effect of the counter-rotating angled injection is then explained by using the velocity field issued from the Navier Stokes analysis and the pressure field given by the bulk-flow model.
机译：本工作涉及用于航空航天应用的混合轴承的Navier-Stokes和大流量分析。这些轴承有望在高转速和高进给压力下工作。在这种情况下，轴承浅腔中的压力不再恒定，并且受静水力和流体动力作用的影响。在文献中已经表明，凹入压力模式可能会对轴承的动态特性产生重要影响。本工作通过使用数值Navier Stokes分析研究径向和成角度喷射的居中混合轴承凹部中的压力场。然后，通过将这些结果与一些参数描述相结合来表征凹入压力模式。为了计算轴承的动态特性，然后将参数压力模式注入到大流量模型中，该模型是对San Andres引入的模型的替代分析。为了评估大流量编码的有效性，将数值预测与从文献中获取的径向和成角度注入的实验数据进行了比较。然后，使用由Navier Stokes分析得出的速度场和由大流量模型给出的压力场来解释反向旋转角度喷射的有利效果。

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