Numerical Study of the Influence of Bedside Curtains on Human Exhaled Contaminants Distribution in a Two-bed Ward

Bedside curtains are widely used in multi-bed wards to protect the privacy of patients. However, it may change distribution airflow and lead cross infection. A numerical approach is applied investigate contaminant a two-bed ward with downward ventilation. Tracer gas such as CO 2 simulate exhaled contaminants by two lying The concentration distributions without bedside compared. results show that have great impacts on throughout ward, which leads significant difference trajectory expiratory flow between Without curtains, supply air can reach almost all except aera bed 1. Curtains mounted grille completely block 1, most along continuous whole passing through while patient blocked curtain, cannot be directly returned outlet, but affected eddy current caused fresh spread end 2. 1 will also cross-infection. Most pass upper part curtain space small bounced curtain. follows back faces 2, then ward. Expiratory moves upward at first airflow. study provide reference for construct healthy indoor environment.