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ETNA - Electronic Transactions on Numerical Analysis
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Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |
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DATUM, UNTERSCHRIFT / DATE, SIGNATURE
BANK AUSTRIA CREDITANSTALT, WIEN (IBAN AT04 1100 0006 2280 0100, BIC BKAUATWW), DEUTSCHE BANK MÜNCHEN (IBAN DE16 7007 0024 0238 8270 00, BIC DEUTDEDBMUC)
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ETNA - Electronic Transactions on Numerical Analysis, pp. 355-369, 2021/04/27
The well-known Reynolds equation is typically used to compute the pressure distribution for elasto-hydrodynamic contacts of parts, as, for instance, in radial slider bearings. In order to resolve local pressure phenomena like edge loading, a higher spatial resolution is needed. This causes problems for stationary solvers, like Gauss-Seidel iteration, which are well suited for the occurring nonlinearities. These problems can be overcome by applying multigrid methods. Since the Reynolds equation is nonlinear, expensive nonlinear multigrid methods are expected to be required. This paper introduces an approach to combine a linear multigrid method with a Gauss-Seidel solver on the finest level, which yields a similar convergence behavior as a nonlinear multigrid method but at much lower computational cost. The formulations are general so that analogous applications of the Reynolds equation, as, for instance, for axial slider bearings or hydrodynamic piston-liner contacts, are straightforward.
Keywords: radial slider bearings, Reynolds equation, multigrid