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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) >CFD ANALYSIS OF A LOW FRICTION POCKETED PAD BEARING
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CFD ANALYSIS OF A LOW FRICTION POCKETED PAD BEARING

机译：低摩擦垫衬轴承的CFD分析

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摘要

A commercial CFD code has been applied to model lubricant flow behaviour within 2D and 3D linear pad bearings having closed pockets or recesses. The study indicates that the presence of closed pockets can result in a significant reduction in bearing friction coefficient. At high convergence ratios, no cavitation is predicted within the pockets. This means that suitably-positioned pockets in the high-pressure region of the bearing result in a much greater reduction in local shear stress than in local pressure, so that there is an overall reduction in friction coefficient. At low convergence ratios, cavitation occurs in the inlet to the pockets so that each pocket acts an effectively-independent step bearing. This results in the overall bearing supporting a higher load and thus having lower friction coefficient than is the case without pockets.
机译：商业CFD规范已被应用到建模具有封闭凹坑或凹口的2D和3D线性滑动轴承中的润滑剂流动行为。研究表明，封闭腔的存在会导致轴承摩擦系数的显着降低。在高会聚比下，不会在口袋内产生气穴现象。这意味着，在轴承的高压区域中适当放置的凹穴会导致局部剪切应力的减小远大于局部压力的减小，从而使摩擦系数总体降低。在低会聚比下，气穴的入口处会发生气穴现象，因此每个气穴都将起到有效独立的阶梯轴承的作用。与没有凹坑的情况相比，这导致整个轴承支撑更高的载荷，因此具有更低的摩擦系数。

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