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On the Horizontal Homogeneity of the Atmospheric Boundary Layer Profile in CFD Simulations |
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PP: 825-829 |
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doi:10.18576/amis/120417
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Author(s) |
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Islam Abohela,
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Abstract |
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| 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. |
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