Cfd Analysis of Convective Heat Transfer Coefficients on the Exterior Surfaces of a Cubic Building
نویسندگان
چکیده
The forced convective heat transfer at the surfaces of a cubic building in an atmospheric boundary layer is investigated with CFD. Heat transfer in the boundary layer is modelled using low-Reynolds number modelling (LRNM) and standard wall functions (SWFs). SWFs are found to overestimate the convective heat transfer coefficient (CHTC) significantly. Using a customised wall function (CWF) for temperature, derived from LRNM data, a good agreement with LRNM is found for the CHTC, with relatively coarse grids in the near-wall region, compared to LRNM. Furthermore, correlations of the CHTC with the wind speed are reported for the windward surface.
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