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Recent progress in the development of the Elliptic Blending Reynolds-stress model

Abstract : The Elliptic Blending Reynolds Stress Model (EB-RSM), originally proposed by Manceau and Hanjali (2002) to extend standard, weakly inhomogeneous Reynolds stress models to the near-wall region, has been subject to various modifications by several authors during the last decade, mainly for numerical robustness reasons. The present work revisits all these modifications from the theoretical standpoint and investigates in detail their influence on the reproduc-tion of the physical mechanisms at the origin of the influence of the wall on turbulence. The analysis exploits recent DNS databases for high-Reynolds number channel flows, spanwise rotating channel flows with strong rotation rates, up to complete laminarization, and the separated flow after a sudden expansion without and with system rotation. Theo-retical arguments and comparison with DNS results lead to the selection of a recommended formulation for the EB-RSM model. This formulation shows satisfactory predictions for the configurations described above, in particular as regards the modification of the mean flow and turbulent anisotropy on the anticyclonic or pressure side.
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Submitted on : Tuesday, December 9, 2014 - 5:01:18 PM
Last modification on : Friday, January 21, 2022 - 4:11:29 AM
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Remi Manceau. Recent progress in the development of the Elliptic Blending Reynolds-stress model. International Journal of Heat and Fluid Flow, Elsevier, 2015, pp.32. ⟨10.1016/j.ijheatfluidflow.2014.09.002⟩. ⟨hal-01092931⟩



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