Abstract: In order to study the influence of smoke prevention air curtain on the fire smoke of train compartment, the internal model of one car of CRH2A EMU was established, and FDS was used to simulate the smoke flow caused by the train compartment fire. According to the smoke horizontal movement speed under the given fire scenario, the horizontal tangential velocity of the air curtain was set. By changing the installation angle of the air curtain, the change of the height of the smoke layer, the distribution of temperature and CO concentration in each area of the compartment space under the action of the air curtain were studied.The results showed that when the fire power is 3 MW, the installation angle of air curtain is 45° and the horizontal and vertical velocities are 4 m/s, the smoke control effect is better. 

Key words:  , smoke proof air curtain, train compartment fire, smoke flow, numerical simulation