LARGE EDDY SIMILATIONS OF FULLY DEVELOPED TURBULENT CHANNEL FLOW

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Presentation transcript:

LARGE EDDY SIMILATIONS OF FULLY DEVELOPED TURBULENT CHANNEL FLOW Tariq Talha School Of Engineering, University of Warwick

DNS AND LES TEST SIMULATIONS Finite Volume Descretization on staggered grid Explicit treatment for convective terms and implicit for diffusive Second order in time and space Non uniform in wall-normal direction Periodic B.cS in Streamwise and Spanwise and no slip at walls Constant Mass flow rate Re/Reτ/Reτ(A) Grid Computational domain LES DNS DNS(KMM) DNS/LES

UMEAN PROFILE

REYNOLD DIRECT STRESSES

REYNOLD SHEAR STRESS

SMAGORINSKY CONSTANT

LES SIMULATIONS AT HIGH REYNOLD NO. 180 395 640 Computational domain Grid Re

TIME HISTORY

UMEAN PROFILE

REYNOLD DIRECT STRESSES

REYNOLD SHEAR STRESS

THANK YOU