LES of spatially-developing stably stratified turbulent boundary layers

In this research, we carry out LES analysis of the spatially-developing stably stratified turbulent boundary layers and investigate the streamwise variation of turbulence structures. To realize it without enormous computational burden, we employ the pseudo periodic condition using the rescale technique for the velocity field in the streamwise direction. Later for the main computational domain, the temperature field is solved and the thermal effects are introduced into the turbulent flow field. Stratification effects are examined in the wide range including the strongly stable condition. Also, through the comparison with the turbulent channel flows by the previous studies, interesting features of a spatially developing stably stratified boundary layer are clarified.