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Communication Dans Un Congrès Année : 2023

Analysis of the Reynolds stress tensor for unsteady flows in URANS models

Résumé

The present work analyzes the Reynolds stress tensor for unsteady URANS models through the use of the triple decomposition of the instantaneous velocity field. To that end, we assessed the performance of two turbulence models, the SST and SST-SAS, in the turbulent flow over a 3D tube bundle as a test case. Our simulation results are compared with available results using RSM models taken from the literature. It was found that a substantial amount of the resolved motion contributes to the total velocity correlations. The SST-SAS model featured a remarkably greater contribution of the resolved part over the modeled part in comparison with the other URANS models.
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Dates et versions

hal-04186964 , version 1 (24-08-2023)

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Domaine public

Identifiants

  • HAL Id : hal-04186964 , version 1

Citer

Mauro Grioni, Sergio Elaskar, Pascal Bruel, Anibal Mirasso. Analysis of the Reynolds stress tensor for unsteady flows in URANS models. MACI 2023 - IX Congreso de Matemática Aplicada, Computacional e Industrial, IMAL; CIMEC; Sinc(i); Dpto. de Matemática, UNL.; AR-SIAM; ASAMACI, May 2023, Santa Fe, Argentina. ⟨hal-04186964⟩
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