Numerical Simulation of Atmospheric Boundary Layer Over Laboratory Scale Two-Dimensional Hill Using Pressure-Driven Boundary Condition

The atmospheric boundary layer (ABL) is the lowest part of the atmosphere directly impacted by the earth s surface. ABL simulation is essential for predicting wind load, pollutant dispersion, and wind capacity over a terrain. ABL can be modeled using the computational fluid dynamics (CFD) tool. Maintaining horizontal homogeneity is critical for a more accurate ABL simulation. Researchers have proposed various boundary conditions for obtaining homogeneously homogeneous ABL. This study investigates pressure-driven boundary conditions for the atmospheric boundary layer over a laboratory-scale two-dimensional (2D) hill. For complex terrains, such as a 2D hill, the numerical analysis of pressure-driven flow has not yet been considered. The validation was done using the experimental results from the ERCOFTAC 69 case, namely a simplified 2D hill. The results are also compared with the shear-driven boundary conditions. The results of simulations of ABL employing pressure-driven boundary conditions using different turbulence models have also been compiled. From MAPE analysis, it is found that the results of ABL simulation using pressure-driven boundary conditions produced lower MAPE values, resulting in superior outcomes compared to the shear-driven boundary conditions.