Experimental Investigation of Air Flows Through Large Openings in a HorizontalPartition

摘要

Attempts have been made to predict the evolution of concentrations by modellingthe flows of air and contaminant in buildings. Several computer programs, different in degree of sophistication and capabilities, have been developed for this purpose. Large apertures between the rooms, and communication openings between the floors in a building, play an important role as paths for air and contaminants to move between the spaces. The flows in such openings are difficult to be mathematically modelled, because they often occur simultaneously, as countercurrent flows, in the opposite directions through different parts of the opening. The following report, covering the first phase of the project, reports on laboratory-made measurements focused on systematic exploration of the impact of several parameters on the phenomenon.