A stochastic two-scale model for pressure-driven flow between rough surfaces.

ABSTRACT: Seal surface topography typically consists of global-scale geometric features as well as local-scale roughness details and homogenization-based approaches are, therefore, readily applied. These provide for resolving the global scale (large domain) with a relatively coarse mesh, while resolving the local scale (small domain) in high detail. As the total flow decreases, however, the flow pattern becomes tortuous and this requires a larger local-scale domain to obtain a converged solution. Therefore, a classical homogenization-based approach might not be feasible for simulation of very small flows. In order to study small flows, a model allowing feasibly-sized local domains, for really small flow rates, is developed. Realization was made possible by coupling the two scales with a stochastic e

SUBMITTER: Perez-Rafols F 

PROVIDER: S-EPMC4950200 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature