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Parallel computing as a vehicle for engineering design of functional surfaces

Gaskell, P.H., Lee, Y.C., Thompson, H.M., Emerson, D.R. and Gu, X. J. (2009) Parallel computing as a vehicle for engineering design of functional surfaces. In: Topping, B.H.V. and Ivanyi, P., (eds.) Proceedings of the first international conference on parallel, distributed and grid computing for engineering. First international conference on parallel, distributed & grid computing for engineering , 6-8 April 2009, Pollack Mihály Faculty of Engineering, University of Pécs. Civil-Comp Press . ISBN 1759-3433

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Abstract

Thin liquid film flow over surfaces containing complex multiply connected topography is modelled using lubrication theory. The resulting time dependent nonlinear coupled set of governing equations for film thickness and pressure is solved on different parallel computing platforms using a purpose written portable and scalable parallel multigrid algorithm in order to achieve the fine-scale resolution required to guarantee mesh independent solutions. The robustness of the approach and tendency toward super-linear parallel performance is demonstrated via the solution of three problems: one to establish the convergence characteristics viz. the partitioning and message passing strategies adopted, taking flow over a well defined trench topography as a benchmark against existing experimental and corresponding numerical predictions; two, flow through a sparsely distributed set of occlusions with computations performed on different parallel architectures; and three, considering free-surface planarisation with respect to flow over complex topography - the first an engineered functional substrate, the second a naturally occurring surface.

Item Type: Proceedings Paper
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds)
Depositing User: Mrs Fiona Slade
Date Deposited: 08 Mar 2010 14:29
Last Modified: 15 Sep 2014 01:18
Published Version: http://dx.doi.org/10.4203/ccp.90.42
Status: Published
Publisher: Civil-Comp Press
Identification Number: 10.4203/ccp.90.42
URI: http://eprints.whiterose.ac.uk/id/eprint/10473

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