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Modeling turbulent flows in the natural convection regime using hybrid RANS-LES approaches

Abstract : Transient, buoyancy-affected turbulent flows play a major role in many industrial and environmental applications, in particular for the sectors of the two industrial partners, automotive (PSA) and nuclear (EDF) industries. Therefore, the present PhD project focuses on configurations representative of a wide range of systems, in order to develop innovative models that will make possible the use of CFD for such very challenging configurations in the daily practice of engineers, which is not possible nowadays. The objective of the thesis is thus to incorporate buoyancy effects in a class of turbulence models, the so-called hybrid RANS/LES models, in order to provide engi neers with efficient, robust and accurate tools for the prediction of flows in the mixed or natural convection regimes. The prediction of transient phenomena due to the influence of buoyancy constitutes the main barrier that must be overcome during the thesis, with the objective of demonstrating the potential of hybrid RANS/LES models for buoyancy dominated flows.
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Contributor : Remi Manceau Connect in order to contact the contributor
Submitted on : Thursday, November 5, 2020 - 7:03:44 PM
Last modification on : Monday, November 7, 2022 - 5:24:33 PM


  • HAL Id : hal-02991109, version 1



Puneeth Bikkanahally, Remi Manceau. Modeling turbulent flows in the natural convection regime using hybrid RANS-LES approaches. jspyrene2020 : Journée Scientifique autour du cluster Pyrene et autres moyens de calcul 2020, Oct 2020, Pau, France. ⟨hal-02991109⟩



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