Abstract
In this article, we investigate the impact of Taylor-Görtler vortices on the drag coefficient and Nusselt number in a heated rotating channel flow using the method of large-eddy simulation (LES). We report the observation of quasi-periodicity of the drag coefficient and Nusselt number in the spanwise direction induced by Taylor-Görtler vortices. The physical conditions under which the extrema of the drag coefficient and Nusselt number occur are investigated. The turbulent flow field is characterized by a Reynolds number Re τ = 150 and various rotation numbers Ro τ ranging from 0 to 7.5. Numerical simulations are performed using two advanced dynamic subgrid-scale stress and heat flux models; namely, the dynamic nonlinear model (DNM) for closure of the filtered momentum equation and the dynamic full linear tensor thermal diffusivity model (DFLTDM) for closure of the filtered thermal energy equation.