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Automatic surface and volume mesh generation for roughness-resolved LES of additive-manufacturing heat exchangers

Abstract : In order to quantify the impact on the heat exchanger performances of the wall roughness introduced by additive manufacturing, roughness-resolved Large-Eddy Simulation (RRLES) is a valuable tool. However, representative rough surfaces and highquality body-fitted grids of these surfaces are difficult to generate automatically, which prevents from building parametric RRLES databases that can be used for model development. In this work, a rough surface generator with a fine control on the height distribution in the three space directions is proposed. This tool creates triangulated surfaces that are the input of a parallel body-fitted tetrahedral mesh generator. In this latter, the cell size and its gradient and the element skewness are well controlled enabling their use for high-fidelity LES.
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https://hal.archives-ouvertes.fr/hal-03390262
Contributor : Serge Meynet Connect in order to contact the contributor
Submitted on : Thursday, October 21, 2021 - 11:39:59 AM
Last modification on : Thursday, November 18, 2021 - 6:06:04 PM

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ETMM13_RSG_RRMG_final.pdf
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  • HAL Id : hal-03390262, version 1

Citation

Serge Meynet, Vincent Moureau, Ghislain Lartigue, Abdellah Hadjadj. Automatic surface and volume mesh generation for roughness-resolved LES of additive-manufacturing heat exchangers. 13th International ERCOFTAC symposium on engineering, turbulence, modelling and measurements (ETMM13), Sep 2021, Rhodes, Greece. ⟨hal-03390262⟩

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