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Author Country (or Countries)

Bahrain

Abstract

One of the main factors affecting the consistency of Computational Fluid Dynamics (CFD) simulation results is the horizontal homogeneity of the atmospheric boundary layer (ABL) profile, which is correctly reproducing the ABL profile and maintaining the profile throughout the streamwise direction of the computational domain for different flow variables. This paper is part of a research arguing that different commercial CFD codes, despite using the same simulation variables, can yield different results for achieving a horizontally homogeneous ABL profile. This paper aims to assess the performance of the commercial CFD code ANSYS Fluent, in achieving a horizontally homogeneous ABL profile.Since CFD is embedded with errors and uncertainties, best practice guidelines for using CFD is extracted from literature and used as a start point for the CFD simulations. Results show that FLUENT is able to achieve a horizontally homogenous atmospheric boundary layer profile using a set of simulations variables. To put the results in context, it is recommended that the obtained horizontally homogenous atmospheric boundary layer profile from more than one commercial code is implemented in studying wind flow around a surface mounted cube in a turbulent channel flow and comparing the obtained results with in-situ measurements and wind tunnels test results. This would demonstrate the effect of obtaining a horizontally homogenous atmospheric boundary layer profile on the consistency of the results of CFD simulations of wind flow around bluff bodies.

Digital Object Identifier (DOI)

http://dx.doi.org/10.18576/amis/120417

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