Modeling of atmospheric boundary flows using experimental investigation over complex terrain in a non-neutral condition

Abstract

The Wind Industry is gradually more relying on Computational Fluid Dynamics models for modeling airflow in a neutrally thermal stratified region. In order to reduce the improbability of wind resource assessment, the present work deals with the involvement of atmospheric stability on atmospheric boundary flows. The atmospheric boundary layer model has been validated using mast measurements and simulation with increasing complexity. The result of the model is compared with large scale field campaigns. In the present work based on the solution of Reynolds Averaged Navier-Stokes equations, the high Reynolds number flows had been implemented. The modeled and observed values are compared for different stability classes. The atmospheric layer boundary (ABL) flow implementations are compared with experimental data obtained from two high met masts installed in Jamgodrani site for neutral stability cases. To inculcate the stability effects in the given model, dimensionless speed profiles are used with the measured data. The present model shows the improvement of the predicted flows over both complex and flat terrain in compare to against neutral model and measured data.