Wind-induced airflow through permeable materials, Part II: air infiltration in enclosures

A new method using the equations of mass conservation and motion, and the state equation of gases, is proposed to characterise air infiltrations induced by fluctuating pressures. The method is applied to an enclosure containing a porous material (ventilation filters or screens) and apertures. Experimental data obtained for the purpose of testing the validity of the method are found to agree well with the predicted values.