Preliminary Plan of Numerical Simulations of Three Dimensional Flow-Field in Street Canyons

With rapid development in computer hardware and numeric algorithms, computational fluid dynamics (CFD) techniques are widely utilized to study the wind field in urban street canyon, and two-dimensional models usually are employed in recent years. This paper develops a three-dimensional numerical model, which based on Reynolds-averaged Navier-Stokes equations equipped with the realizable k-epsiv turbulence model by CFD. In the past, no one has done similar work, so this paper investigates a simple ideal model. Because the model is in line with the actual situation, this three-dimensional model can further simulate the real flow-filed in street canyons.