Constrained large-eddy simulation of laminar-turbulent transition in compressible channel flows

Abstract An improved approach for constrained large-eddy simulations (CLES) of wall-bounded compressible transitional flows is proposed by introducing an intermittency factor. The model tested and validated with channel at various Mach numbers Reynolds that are transitioning from laminar to turbulent states. compared against traditional dynamic Smagorinsky (DSM) Direct Numerical Simulations (DNS), where the in better agreement DNS results than DSM model, terms mean velocity profiles, total stress heat flux. Therefore, method can be used accurately predict temporal laminar-turbulent transition process flows.