| Title |
A Numerical Study on Passenger Evacuation in a Subway Station in Case of Fire Occurrence |
| Authors |
김치겸(Chi Gyeom Kim) ; 이성원(Sung Won Lee) ; 허남건(Nahmkeon Hur) ; 남성원(Seong Won Nam) |
| Keywords |
여객 대피 유동 ; 이산요소법 ; 전산유체역학 ; 전처리장치 Passenger evacuation flow ; Discrete element method ; Computational fluid dynamics ; Pre processor |
| Abstract |
A numerical simulation of passenger evacuation in a subway station was performed by coupling the passenger flow analysis and the fire simulation. The algorithm of the passenger flow analysis was based on a DEM (Discrete Element Method) using the potential map of the direction vector for each passenger. This algorithm was improved in the present study as to use finer grid smaller than a passenger in order to resolve detailed geometry of the station and to resolve the behavior of passengers in the bottleneck at the ticket gate considering the collision of passengers to a wall or with other passengers. In the fire simulation, the CO distribution predicted by using CFD was used to take into account the effect of toxic gases on the passengers' mobility. The methodology proposed in the present study could be used in designing safer subway station in case of fire occurrence. |