Application of Super Computer for the Study of Fire Driven Flow in the Deeply Underground Subway Station

초록

Recently the number of the deeply underground stations has been increased along the subway railroads of urban area compared to the past subway railroads. The Shin-Gum-Ho subway station (the Fifth lines, the depth : 46m) which is the third among the deepest subway stations in the Korea was chosen as the model of deeply underground stations, and attempted to do simulation of fire driven flow. The total number of grid was about 9,000,000 to make simulation of fire and smoke flow from the platform to exit in this research, and the grid system was divided into 19 blocks to increase the efficiency of calculation. The FDS (Fire Dynamics Simulator) code was employed in this study, and LES (Large Eddy Simulation) method was used to solve the fire-driven flow. Each block is processed in a CPU using parallel processing of MPI (Message Passing Interface) in super computer (clustered computers). The resources of CPU for this simulation are the sixteen Intel 3.0 GHz Dual CPU (20 CPU) which are clustered through fast Ethernet Card and MPI