Abstract
There are concepts of “ general ventilation” and “ local ventilation” in the ventilation design of the room. “ General ventilation” does not pay much attention to the transportation and transportation of pollutants by indoor air, but dose pay attention to the ability to stir the pollutants and indoor air (mixing ability). “ Local ventilation” pays great attention to the transportation and transportation of pollutants due to the movement of indoor air (indoor airflow). When analyzing the flow of air in a room by computational fluid dynamics (hereinafter: CFD), the purpose of the former is to analyze the non-uniformity that occurs in the room due to insufficient mixing capacity. Regarding the latter, how the intended transport / transport properties are achieved by the indoor air flow is analyzed together with the non-uniform properties. It is most effective for CFD analysis, the latter transportation / transportation analysis by airflow, that is, rational design of local ventilation.
