Performance of impulse ventilation system in an underground car park fire: Case study

Abstract In this paper, a detailed sensitively analysis for significant parameters was conducted to assess the ability of impulse ventilation system (IVS) to guarantee safe evacuation of occupants, public and fire fighters due to fire in an existing underground car park. The significant parameters include parked cars, extract rate, jet fan number and fire location. Analysis is performed using a general-purpose CFD code to simulate 9 different scenarios in a 10,021 m 2 car park with a fire source having an experimental transient heat release rate simulating two car fires. The influence of significant parameters on IVS performance for smoke clearance was illustrated to provide insight into performance-based design of IVS in an underground car park.