Roof region dependent wind potential assessment with different RANS turbulence models

摘要: The analysis of the wind flow around buildings has a great interest from point view energy assessment, pollutant dispersion control, natural ventilation and pedestrians comfort safety. Since LES turbulence models are computationally time consuming when applied to real geometries, RANS still widely used. However, very sensitive chosen parametrisation results can vary according application. In this investigation, simulation an isolated building is performed using various types in open source code OpenFOAM, compared with benchmark experimental data. order confirm numerical accuracy simulations, grid dependency convergence index rate calculated. Hit rates calculated for all cases that successfully pass validation criterion analysed at different regions roof, most accurate modelling each region identified. characteristics also generation, adequate turbine model exploitation roof chosen.