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| Application of CFD Technology and Hot Smoke Test in the Study of Metro Fire |
| LIU Shu |
| (The Third Railway Survey and Design Institute Group Corporation, Tianjin 300251, China) |
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Abstract Abstract: Research purposes: It is very important that how to take the effective measures to ensure the passengers scurity when the fir^ happens in the metro station which is taken as the closed space underground. The CFD simulation technology and hot smoke test method are applied to analyze the smoke evacuation effect of the supply and exhaust air system in the station in this paper, which can provide some references for the simulation of large scale fire. Research conclusions ：( 1) There exists the phenomenon of smoke flowing here and there through the hot smoke test. Thus, the normally closed electric smoke fire damper should take place of the manual fire damper in the pipe when designing the natural air makeup on the smoke evacuation of the corridor. ( 2 ) Through the field test, the wind speed and temperature of test points can meet the requirements of national regulation, and the effect of smoke evacuation is good, which prove that the supply and exhaust air system is feasible and provide references for other metro engineering. Establish the mathematic model of smoke evacuation system in metro station, and solve the model by the fluent software. The accuracy of established model is verified by comparing the field test data in hot smoke test with the simulation values, which can also prove that the settings of boundary conditions are reasonable and provide introduction for large scale fire simulation.
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Received: 07 March 2016
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2016, Vol. 33 
