Inertia effects in textured hydrodynamic contacts
Inertia effects in textured hydrodynamic contacts
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DOI：
10.1243/13506501jet697
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发表时间：
2010-01-01
影响因子：
2
通讯作者：
Cervantes, M. J.
中科院分区：
文献类型：
--
作者：
Cupillard, S.;Glavatskih, S.;Cervantes, M. J.
对平行纹理滑块进行了流动分析，探讨了流体惯量的作用。对二维层流、定常等温流进行了数值模拟。将Stokes解与相同雷诺数下的Navier-Stokes解进行了比较。分析了纹理深度的范围。结果表明，存在一个能提供最大承载能力的最佳织构深度值。还表明存在一个临界深度值。当深度高于临界值时，惯性对承载能力有负面影响，而当深度低于临界值时，惯性对承载能力有积极影响。对于给定的纹理深度，这些效果随着雷诺数的增加而放大。当考虑具有前区域的平行纹理滑块的实际结构时，惯性的全局效应是正的。
A flow analysis is carried out for a parallel textured slider to investigate the role of fluid inertia. Numerical simulations are performed for a laminar, two-dimensional, steady and isothermal flow. Stokes solutions are compared with Navier-Stokes solutions at the same Reynolds number. A range of texture depths is analysed. It is shown that there is an optimum value of texture depth that provides maximum load-carrying capacity. It is also shown that there is a critical depth value. Inertia has a negative effect on the load-carrying capacity for depths higher than the critical value, whereas it has a positive effect for lower depths. For a given texture depth, these effects are amplified as the Reynolds number increases. The global effect of inertia is positive when a realistic configuration of a parallel textured slider with a fore-region is considered.