Abstract
In complex turbulent flows the length scale varies substantially over the computational domain. When modelling such flows with large eddy simulation (LES) this must be accounted for. In the present paper a self-adaptive method is presented to adjust the step size of the computational grid to the local resolution requirements of an LES. An r−adaptive method is used involving a moving mesh PDE. Different physically motivated monitor functions are proposed, most of them closely related to LES, and applied to the turbulent flow over periodic hills.
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Hertel, C., Fröhlich, J. (2011). Error reduction in LES via adaptive moving grids. In: Salvetti, M., Geurts, B., Meyers, J., Sagaut, P. (eds) Quality and Reliability of Large-Eddy Simulations II. ERCOFTAC Series, vol 16. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0231-8_28
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DOI: https://doi.org/10.1007/978-94-007-0231-8_28
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-0230-1
Online ISBN: 978-94-007-0231-8
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