Abstract:
Simulations were carried out to study the effect of free-stream turbulence (FST) on forced convection from a heated square cylinder in a cross-flow. The computations were performed using LES methodology with the dynamic Smagorinsky model used for the sub-grid stress modelling. The values of the inlet turbulence intensity considered were 4, 8 and 12% at a Reynolds number of 16000. It has been observed that the mean drag and pressure coefficient increases with inlet turbulence, but the Strouhal number remains unchanged. Heat transfer from the side faces increases sharply with inflow turbulence than that at the back face. The rise in Nu for rear face is approximately 15% compared to 35% rise for the side face from the smooth flow to 12% FST case.
Description:
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .
