| Title |
Analysis on Contaminant Migration from Negative Pressure Isolation Ward during Door Opening and Human Movement using CFD Simulation |
| Authors |
Jo, Seong-Min ; Kim, Gi-Hoon ; Sung, Min-Ki |
| DOI |
https://doi.org/10.5659/JAIK_SC.2017.33.10.61 |
| Keywords |
MERS ; Airborne infection ; Negative-Pressure Isolation Ward ; Air migration ; Computational Fluid Dynamics |
| Abstract |
Recent outbreak of Middle East Respiratory Syndrome(MERS) in KOREA, brought up the public demands for preventing infectious diseases. To fulfill the demands, KOREA Ministry of Health and Welfare(MOWH) and Centers for Disease Control and Prevention(CDC) are working on increasing the number of Negative Pressure Isolation Ward(NPIW) in hospitals. NPIW prevents air migration from ward by maintaining different pressure with adjacent areas. However, previous studies have shown that air migration can be observed in situation of door openings. In this study, different door opening speed and human movement were simulated with Computational Fluid Dynamics(CFD) to observe air migration from NPIW. Total four cases were simulated which differs from each other by door open/close speed and human movement. Result showed that faster door opening speed can reduce air migration due to the total opening duration of the door. The cases with human movement involved, showed higher air migration because the air migrated father to the anteroom with the human. As a result, short duration of the door opening and closing is recommended and when medical staff enters of leaves the ward, they should take few moments before they move to adjacent area. |