AN EXTENSIVE STUDY ON LES, RANS AND HYBRID RANS/LES SIMULATION OF A ă NARROW-GAP OPEN TAYLOR-COUETTE FLOW - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2014

AN EXTENSIVE STUDY ON LES, RANS AND HYBRID RANS/LES SIMULATION OF A ă NARROW-GAP OPEN TAYLOR-COUETTE FLOW

Résumé

The present paper concerns a numerical benchmark of various turbulence ă modelings, from RANS to LES, applied to Taylor-Couette-Poiseuille flows ă in a narrow gap cavity for six different combinations of rotational and ă axial Reynolds numbers. Two sets of refined Large-Eddy Simulation ă results, using the WALE and the Dynamic Smagorinsky subgrid scale models ă available within an in-house code based on high-order compact schemes, ă hold for reference data. The efficiency of a RANS model, the Elliptic ă Blending Reynolds Stress Model (EB-RSM) [1], and a hybrid RANS/LES ă method, the so-called ``Equivalent DES'' [2], both run with Code ă Saturne, is then questioned. Thin coherent structures appearing as ă negative (resp. positive) spiral rolls are obtained by the LES but also ă the hybrid RANS/LES along the rotor (resp. stator) sides. More ă quantitatively, the hybrid RANS/LES does not improve the predictions of ă the EB-RSM for both the mean and turbulent fields, stressing the need ă for further theoretical development.
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Dates et versions

hal-01464701 , version 1 (10-02-2017)

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  • HAL Id : hal-01464701 , version 1

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Christophe Friess, Sébastien Poncet, Stéphane Viazzo. AN EXTENSIVE STUDY ON LES, RANS AND HYBRID RANS/LES SIMULATION OF A ă NARROW-GAP OPEN TAYLOR-COUETTE FLOW. PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING - ă 2014, VOL 1A: SYMPOSIA, 2014, Unknown, Unknown Region. ⟨hal-01464701⟩
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