An Evaluation of Inflow Profiles for CFD Modeling of Neutral ABL and Turbulent Airflow over a Hill Model
- سال انتشار: 1402
- محل انتشار: دوماهنامه مکانیک سیالات کاربردی، دوره: 16، شماره: 8
- کد COI اختصاصی: JR_JAFM-16-8_002
- زبان مقاله: انگلیسی
- تعداد مشاهده: 197
نویسندگان
Department of Physics, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, ۹۳۰۰۲, Morocco
Team: Energy, materials, numerical physics, Higher Normal School, Abdelmalek Essaadi University, Tetouan,۹۳۱۰۰, Morocco
Department of Mathematics, Faculty of Sciences, Cadiz University, Poligono Rio San Pedro S/N Puerto Real, Cadiz, ۱۱۵۱۰, Spain
Team: Energy, materials, numerical physics, Higher Normal School, Abdelmalek Essaadi University, Tetouan,۹۳۱۰۰, Morocco
Department of STIC, National School of Applied Sciences, Abdelmalek Essaadi University, Tetouan, ۹۳۰۰۲, Morocco
چکیده
The implementation of the wind turbine is a major issue in the wind engineering sector. However, the presence of wind turbines in the lower part of the atmospheric boundary layer (ABL) requires an appropriate study for the simulation of turbulent airflow in the wind farm situated on hilly terrain. The use of precise Computational Fluid Dynamics (CFD) simulations for the ABL flow is vital for numerous applications, such as wind energy, building, urban planning, etc. To achieve accurate results, it is imperative that the inlet boundary conditions produce vertical profiles that keep a uniform horizontal distribution (with no streamwise gradients) in the upstream region of the computational domain for all important parameters. A development approach is proposed herein, focused on the imposition of two different inlet profiles when used in combination with the rough z۰-type scalable wall function. The horizontal homogeneity of these profiles has been verified by ۲D Reynolds averaged Navier-Stokes (RANS) through the examination of a neutral ABL in an empty computational domain using the k-ε turbulence model. The findings indicate that the use of this modeling approach can yield relatively consistent homogeneity of neutral ABL for both inlet boundary conditions. Subsequently, sensitivity analyses were performed on the inflow profiles to forecast the evolution of the bottom half of an idealized truly-neutral ABL and to accurately capture the complex dynamics of atmospheric flows over hilly terrain. This study compares the results with the CRIACIV (Inter-University Research Centre on Building Aerodynamics and Wind Engineering) boundary layer wind tunnel experimental data, showing that the inflow profiles and the presence of topographic complex have a significant impact on air velocity, turbulent kinetic energy and turbulence intensity in the x-direction. The results obtained are in good correlation with published experimental data in the presence of the hill surface.کلیدواژه ها
Computational wind engineering k, ε turbulence model Neutral Atmospheric Boundary Layer (ABL) Horizontal homogeneity Roughness surface FEM Hillاطلاعات بیشتر در مورد COI
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