CFD Simulation of Flame Manikin Test for Fire Proof Garment during Flash Fire Exposures and Cooling Phase

摘要

Numerical simulation study of flame manikin test for fire proof garments has significance on better understanding transient heat transfer to human body under extreme environments. Skin burns can occur not only during a fire, but also after a fire ends. In this study, a full scale transient numerical simulation of naked flame manikin test during both flash fire exposure and cooling phase is conducted based on CFD techniques. The full-scale 3D geometrical model of the combustion chamber is built by means of non-contact 3D body scanner, Geomagic studio and Gambit software, The elaborate structures of 12 burners are rebuilt according to actual structures to improve accuray. The prediction results have been validated using data from naked manikin tests. The history of simulated heat flux is consistent with the measured heat flux history. The temperature filed inside the chamber and particularly in the close vicinity of the body at different times is obtained. It would be helpful for further study on modeling heat transfer in clothed manikin tests and for predicting skin damage accurately.