抄録
It is too difficult to evaluate cross ventilation quantitatively. In this report, the effective volume index, which shows the diffuse degree of tracer gas, is applied to the steady cross ventilation. And then the effective volume index is examined by using CFD analysis, spatial characteristics are decided by such volume. In conclusion, it is confirmed to be able to evaluate whether the cross wind passes through the room without most mixing air or it mixes room air immediately.
