Evaluation of Thermal Safety in Fire Using Human Thermal Model and CFD Simulation
The fires bring huge loss every year, a large number of firefighters and victims are seriously injured in fires and many of them even lost their lives. The aim of this work is to study on the thermal safety and discomfort of human body in fire environment using modeling and CFD methods. A transient multi-node human thermal model is developed for improving the simulation of thermoregulation in serious condition. Coupled with the human thermal model, a real shaped model of male body with 176 curved surfaces and more than 200 thousand cells, and real physical parameters was built. The CFD computation was taken using standard k-epsilon turbulence viscous model and discrete coordinate radiation model. A virtual room with 3.0m x 3.0m x 2.6m was built and series of fire with typical heat release rate were introduced as heat resource. The simulation was taken with 0.5 second time step. The prediction of thermal injury degree was considered with Stolls and Takatas injury model based on data from model and CFD computation. The time for heat stroke, deeply injury and degrees of thermal comfort indices were compared, the prediction of thermal safety and discomfort was made. Furthermore, a ventilated, fire-resistant enclosure including a radiator is constructed to improve the experiment.
fire safety human thermal model CFD burning injury
Han Xuefeng Weng Wenguo
Institute of Public Safety Research Tsinghua University Beijing, P.R. China
国际会议
北京
英文
14-16
2011-08-08（万方平台首次上网日期，不代表论文的发表时间）