We have an internal domain which is filled by very hot buoyant air because it is under direct attack of solar radiation. The thermal structure of the boundaries is insulated thus trapping heat due to green house effect making the air inside almost uninhabitable(MRT= 50 deg C). We have a number of seat-like obstructions inside which personnel are supposed to hang around and do some clean-up and maintenance. The situation gets complicated due to the presence of two floors in the domain with a staircase connecting the two. We try our best to ventilate the interiors by keeping two doors open, one functioning as an inlet and another as an outlet which may change depending on the wind direction in the external ambience. Also we add a makeshift duct on the lower floor with holes at roughly equal intervals through which air at a very low mass flow rate of about 0.01 kg/s and a temperature of 15 deg C is allowed to flow. We study the air movement and the temperature distribution of the air in the domain by using a forced convection solver using RANS model.
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