Experimental and numerical study of pool fire dynamics in an air-tight compartment focusing on pressure variation

The present paper studies the fire-induced pressure evolution in an air-tight compartment. Two cases with different sizes (i.e., 0.3 m × and 0.5 m) of square methanol pool fire are considered. Repeated tests were performed for each case, leading to a total four experiments. leakage compartment is measured under conditions order obtain relationship between increase. inside reaches peak values 133 Pa 697 small large fire, respectively. Simulation results using Fire Dynamics Simulator (FDS) 6.5.3 match well simulated flow rates, which reach up 65 m3/h 200 m3/h, respectively, depend on variation settings. rises strongly growth phase line rapid increase heat release rate. gradually increasing losses subsequently lead decrease pressure.