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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.1: Advanced Energy Systems; Advanced Heat Transfer in Engineering Systems; ... >A COMPARISON OF HOMOGENIZATION AND DIRECT TECHNIQUES FOR THE TREATMENT OF ROUGHNESS IN NON-NEWTONIAN-MODIFIED REYNOLDS EQUATION: NUMERICAL RESULTS
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A COMPARISON OF HOMOGENIZATION AND DIRECT TECHNIQUES FOR THE TREATMENT OF ROUGHNESS IN NON-NEWTONIAN-MODIFIED REYNOLDS EQUATION: NUMERICAL RESULTS

机译：非牛顿改性雷诺方程均质化和直接技术处理粗度的比较：数值结果

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This article is concerned with the simulation of a lubricated contact in severe running conditions considering the fluid as Non-Newtonian of Maxwell type. To overcome some limitations that become apparent at very small film thickness, notably when the roughness is two-dimensional, Jai in 1995 introduced a new technique based on a rigorous homogenization theory in the case of compressible fluid flow. This procedure was mathematically developed by Jai and Buscaglia and Jai, and applied to tribological problems by Jai and Bou-Saied. The theoretical developments have been presented and discussed elsewhere of this work and we present here some numerical results obtained from the homogenized technique. The obtained results were discussed and compared with the direct methods of calculation, and seem to us valid for a definitive validation of this method said about homogenization. These results have been compared to the exact solution obtained from a numerical simulation. By direct inspection it is clear that the symmetry predicted by the homogenization method is not present in the exact solution which qualitatively agrees with the homogenized solution.
机译：本文关注的是在严苛的运行条件下将润滑液视为麦克斯韦型非牛顿型润滑接触的模拟。为了克服某些限制，这些限制在非常小的薄膜厚度下尤其是在粗糙度为二维时会变得明显，在可压缩流体流动的情况下，Jai在1995年引入了一种基于严格均质化理论的新技术。该程序是由Jai和Buscaglia和Jai在数学上开发的，并由Jai和Bou-Saied用于摩擦学问题。已经在本文的其他地方介绍和讨论了理论发展，在这里我们介绍了一些从均化技术获得的数值结果。对获得的结果进行了讨论，并与直接的计算方法进行了比较，对我们来说，对于均质化这种方法的确定性验证似乎是有效的。将这些结果与从数值模拟获得的精确解进行了比较。通过直接检查，很明显，均质化方法预测的对称性不存在于与均质化溶液在质量上一致的精确溶液中。

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