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Numerical simulation of the influence of CO concentration on escape exit in cabin

ZHANG Qing-song;YANG Wei;JI Huan-le;QI Han-peng;College of Safety Science and Engineering,Civil Aviation University of China;Tianjin EI fire- fighting equipment Co.Ltd;  
To study the influence of toxic smoke on the cabin space evacuation of mobile limited aircraft,based on the improvement of FED model,the calculation formulas of CO concentration was deduced,and the concept of security curve was put forward.FDS was used to simulate the variation principle of CO concentration at the export of aircraft cabin.The results indicated that:by comparing with CO security curve,the time for CO concentration to exceed the endurable concentration of human can be obtained.The study can provide scientific basis for selection of aircraft cabin evacuation routes,selection of export,and make and drill of emergency plans.
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