Grid generation in hydrodynamic and elastohydrodynamic lubrication using algebraic multigrid method

Abstract

This article analyses the generation of ‘optimal’ grids for lubrication problems including hydrodynamic and elastohydrodynamic lubrication. It does this by using existing numerical solutions on (very) fine and regular grids, and studying the coarse grids generated by algebraic multigrid. This article analyses two hydrodynamic lubrication applications, the circular hydrodynamic lubrication contact and the rough surface lubrication. The latter subject is currently attracting a large interest from both industry and university. A third elastohydrodynamic lubrication application highlights the strong coupling in the high-pressure zone.