抄録
In this paper, the dispersion process of coughed air in a stagnant indoor environment is visualized by the experiment using flour as tracer, and the transient CFD analysis coupled with concentration simulation. Moreover, the instant flow field in breathing zone immediately after coughing is visualized and measured by PIV. It shows that coughed air will be diffused into a considerable area even in a stagnant environment. The analytical results also indicate that the dispersion process and influence to another occupant of coughed air will be greatly affected by indoor ventilation situations.
