internal airflow

Modelling wind driven airflow rate with CFD and verification of approximation formulas based on wind pressure coefficients

Submitted by on Thu, 10/31/2013 - 11:32

An isothermal CFD study was made of a building perpendicular to the wind direction. The building was modelled with a closed façade, and consecutively with one and multiple openings. The sensitivity was investigated for different turbulence models, meshes and near wall treatments, both in 2D and 3D. A large sensitivity was found to the modelling options with regard to the predicted wind pressure coefficients (Cp) distribution, but less with regard to the predicted flow rate through the openings.