429 RWTH Publication No: 481389        2015        IGPM429.pdf
TITLE A Static Condensation Reduced Basis Element Approach for the Reynolds Lubrication Equation
AUTHORS Eduard Bader, Martin A. Grepl, Siegfried Müller
ABSTRACT In this paper, we propose a Static Condensation Reduced Basis Element (SCRBE) approach for the Reynolds Lubrication Equation (RLE). The SCRBE method is a computational tool that allows to efficiently analyze parametrized structures which can be decomposed into a large number of similar components. Here, we extend the methodology to allow for a more general domain decomposition, a typical example being a checkerboard-pattern assembled from similar components. To this end, we extend the formulation and associated a posteriori error bound procedure. Our motivation comes from the analysis of the pressure distribution in plain journal bearings governed by the RLE. However, the SCRBE approach presented is not limited to bearings and the RLE, but directly extends to other component-based systems. We show numerical results for plain bearings to demonstrate the validity of the proposed approach.
KEYWORDS Reynolds lubrication equation, static condensation, domain decomposition, model order reduction, reduced basis element method, a posteriori error estimation
DOI 10.4208/cicp.130815.180416a
PUBLICATION Communications in Computational Physics
January 2017, Volume 21, Issue 1, pp. 126-148
CORRESPONDING AUTHOR bader@aices.rwth-aachen.de