| Title |
Numerical Prediction of Smoke Concentration in a Compartment Fire by Using the Modified Volumetric Heat Source Model |
| Keywords |
Compartment fire ; 실내 화재 ; Volumetric heat source ; 체적열원, VHS ; Smoke concentration ; 연기농도 ; Eddy breakup ; EBU Model ; 에디분열모델 |
| Abstract |
The present study investigates the characteristics of fire-driven heat flows and gas concentration in a compartment fire by using the modified VHS model(MVHS). The main idea of this model is to add some source terms for combustion products and oxygen consumption to the original VHS model for providing more accurate and useful information on gas concentration distributions as well as thermal fields. It is found that the present MVHS model shows fairly good agreement with the experimental data and the eddy breakup combustion model. The tilting angle of fire plume calculated by MVHS is larger than that of EBU model because the fire source of VHS is affected by ventilating flow less than EBU. However, this discrepancy is apparently reduced in the downstream region of fire source. |