Bibliographic Details
| Title: |
Calibrated reduced-order POD-Galerkin system for fluid flow modelling |
| Authors: |
Couplet, M.1 mathieu.couplet@laposte.net, Basdevant, C.2 basdevant@lmd.ens.fr, Sagaut, P.3 sagaut@lmm.jussieu.fr |
| Source: |
Journal of Computational Physics. Jul2005, Vol. 207 Issue 1, p192-220. 29p. |
| Subjects: |
Galerkin methods, Fluid dynamics, Numerical analysis, Fluid mechanics |
| Abstract: |
Abstract: To improve the behaviour of reduced-order proper orthogonal decomposition (POD)-Galerkin systems, two numerical methods are proposed. These methods determine free parameters in the POD-Galerkin system from flow simulations via a minimization problem. They give rise to linear systems and their computational costs are reasonable. Both methods are assessed for two flow configurations: a two-dimensional flow around a square–cylinder for a Reynolds number of 100 and a three-dimensional flow past a backward-facing step for a Reynolds number of 7432 based on the step height and the streamwise velocity at the middle of the inlet. For both configurations, the methods are effective since accurate calibrated reduced-order POD-Galerkin systems are obtained. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
