numerical analysis of naturally ventilated double-skin façade of various aspect ratio with a venetian blind in summer

Double-skin façade (DSF) with venetian blinds universally used in commercial buildings is the integral part of modern building in hot summer and cold winter areas. Nonetheless, economical and practical methods for modeling ventilation in naturally ventilated DSF withvenetian blinds based on computational fluid dynamics (CFD) have not been completely developed yet. In this paper, simulation of DSF including coupled convective and radiative heat transfer which is effected by buoyancy force and solar radiation respectively are conducted through CFD solver. Furthermore, a wide range of aspect ratios (H/W) are taken into account in CFD simulation.DSF consists of a cavity separating the exterior space from the thermally controlled interior space. The temperatures of the surfaces that interact with these spaces are determined. Results depict that average temperature of the surfaces and outlet air flow in highaspect ratio (H/W) in the same condition increases whereas Re and Nu decrease.

کلیدواژه ها:

Double-skin façade (DSF) ، Naturally ventilation ، CFD ، Aspect ratio