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Computational fluid dynamics (CFD) simulations for structural wind engineering applications require a fully developed boundary layer approach flow with horizontal homogeneity and zero pressure gradient for accurate characterization of wind loading on a structure. Previous studies have focused on achievement of such requirements primarily in computa...
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... Tables Table 1. Boundary conditions of precursor simulations (OpenFOAM, 2019) ............................... 9 Table 2. Boundary conditions of simulations for elongated domain ........................................... 13 Table 3. Boundary conditions for the main simulation with an isolated building ......................... 21 Table 4. Boundary conditions of the simulation with generic model ........................................... 31 Fig. 1. Computational domains for precursor simulations: (a) H = H ABL and (b) H = 2H ABL . ...Context 2
... length of the domain in the flow direction (L) is HABL in both cases. As indicated in Table 1, both inlet and outlet boundaries are set to periodic conditions for all variables, in which the flow field can fully develop as in an infinitely long domain along the streamwise direction. Although the current steady RANS study is not capable of predicting the integral length scales of the turbulent flow, it is important to note that the limited domain length and periodic boundary conditions influence the turbulence length scales in precursor simulations, particularly in the case of 3-D unsteady flow (Nandi & Yeo, 2021). ...