It is necessary to unsteadily accurately estimate handling and time-related spatial distribution of theindoor environment element in respect of externality meteorological phenomenon and time-varyingmovement of the heating and cooling load in order to carry out the thermal environment design in detail.With the speedup of the recent computer, the unsteady CFD calculation was practically carried out andresults fed back to the environmental design.However, time subtraction interval and convergence decision are appropriately set at the case of theunsteady analysis, and it is necessary to examine
A model of Venetian blind associated simple or a double glazing is proposed in this article. Simplified modeling is based on a 2D approach (not taken into account of the effects edges) and separately treats the transmission of direct and the diffuse one. The evolutions of the form factors and the solar flows transmitted according to the degree of opening of the blind, of the slope of the plates, the position of the sun in the sky are taken into account and the models used are described.
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