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Descripción
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| A methodology is presented to create reduced models of fluid thermal problems with varying geometry. The methodology is applied to the nonisothermal backward-facing step problem, depending on three parameters: the Reynolds number, the wall temperature, and the step height. Various snapshots are calculated using a computational fluid dynamics (CFD) solver in disparate grids, which are transformed into a generic grid by means of a smooth function. A proper orthogonal decomposition basis is created for these transformed snapshots, the flow variables are expanded into the resulting modes, and the reconstructed flow variable distributions are transformed back into the original grids. The associated mode amplitudes are calculated minimizing (using a genetic algo- rithm) a residual, which is defined using a limited number of grid points (which lessens the computational effort). The resulting reduced order model provides solutions that compare well with their CFD counterparts, in a much smaller CPU time. | |
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Internacional
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Si |
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Nombre congreso
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World Congress on Engineering 2011 |
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Tipo de participación
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960 |
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Lugar del congreso
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Londres |
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Revisores
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Si |
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ISBN o ISSN
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978-988-19251-5-2 |
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DOI
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Fecha inicio congreso
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06/07/2011 |
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Fecha fin congreso
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08/07/2011 |
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Desde la página
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2411 |
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Hasta la página
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2416 |
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Título de las actas
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Proceedings of the World Congress on Engineering 2011 |