Application of Inflow Turbulent Fluctuations of Wind Velocity and Air Temperature for LES of Non-isothermal Flow around a Building

Abstract

This study aims to apply artificially generated turbulent fluctuations of wind velocity and air temperature as an inflow boundary condition for a large-eddy simulation of a non-isothermal flow around a building. The stratification condition of the flow field was a weak unstable situation. The artificial turbulent fluctuations generated by our method satisfy not only the prescribed profiles for the turbulent fluxes of the momentum and the temperature but also the prescribed spatial and time correlations. The mean wind velocity and the mean temperature predicted from LES agreed well with the experimental results.