EFFECT OF MOMENTUM PROVISION IN COMPUTATIONAL FLUID DYNAMICS ON TURBULENT STATISTICS IN URBAN BOUNDARY LAYER

To reproduce homogeneous flow fields above urban-like turbulent boundary layers in computational fluid dynamics (CFD), numerous CFDs with a limited numerical domain employ periodic conditions both lateral directions artificial momentum provision to maintain airflows. Although such sources are clearly different from the wind-tunnel experiments, effects of these on airflow layer not well studied. In this paper, therefore, we investigate how differentiates vertical Reynolds stress and kinetic energy profiles using large-eddy simulations airflows over cubical block arrays.