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arXiv · 1305.6681

Large eddy simulation of a muffler with the high-order spectral difference method

Matteo Parsani·Michael Bilka·Chris Lacor
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Abstract

The combination of the high-order accurate spectral difference discretization on unstructured grids with subgrid-scale modelling is investigated for large eddy simulation of a muffler at Re = 4.64 10^4 and low Mach number. The subgrid-scale stress tensor is modelled by the wall-adapting local eddy-viscosity model with a cut-off length which is a decreasing function of the order of accuracy of the scheme. Numerical results indicate that although the high-order solver without subgrid-scale modelling is already able to capture well the features of the flow, the coupling with the wall-adapting local eddy-viscosity model improves the quality of the solution.

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Matteo Parsani, Michael Bilka, Chris Lacor. 2013-05-29. Large eddy simulation of a muffler with the high-order spectral difference method. https://arxiv.org/abs/1305.6681

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