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This paper investigates the combined effect of inflow method and aerodynamic roughness length for LES of the neutral ABL.
In large eddy simulations (LES) of the atmospheric boundary layer (ABL), the choice of inflow method and the specification of surface roughness are crucial for obtaining accurate results.
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Finally, the value of the aerodynamic roughness length is found to only weakly influence the performance of the inflow methods considered.
The performance in generating a physically-sound turbulent flow field with the proper mean skin friction and turbulent profiles after a short relaxation length is equivalent to more common inflow methods thanks to the generation of large-scale streamwise vorticity by the roughness elements.
The difficult geological conditions of underground mines in permeable and fractured rocks require the use of ground support and inflow management methods.
In this study, four inflow turbulence generation methods (including three synthetic turbulence methods and the recycling method) were used to simulate wind flows in ABL for LES of wind loadings on a tall building.
It is very necessary to conduct the research of the unsteady flow of the pump with non-uniform inflow by experiment method.
In this numerical procedure, the natural unsteady wind in the atmospheric boundary layer is modeled with an artificial inflow turbulence generation method.
The review also identifies the major challenges and opportunities for prospective research, including, a new scheme for modeling the inflow, a novel method for preprocessing time series frequency based on Fast Orthogonal Search FOSS) techniques, and Swarm Intelligence (SI) as an optimization approach.
The inflow turbulence generating method was used for the input of the fluctuating wind speed at the inlet boundary, where the fluctuating wind field that satisfies the characteristics of the wind field in the mountainous area was simulated according to the data measured at the bridge site station by using the Weighted Amplitude Wave Superposition (WAWS) method.
Several remedial measures were presented to improve the performances of these inflow turbulence generation methods.
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