- Author
- Wang, Z. | Jia, F. | Galea, E.
- Title
- Predicting Toxic Gas Concentrations Resulting From Enclosure Fires Using Local Equivalence Ratio Conept Linked to Fire Field Models.
- Coporate
- Greenwich Univ., London, England
- Report
- Paper No. 02/IM/101, December 2002, 21 p.
- Keywords
- fire models | field models | toxic gases | enclosures | computational fluid dynamics | heat release | combustion | heat sources | hydrocarbons | carbon monoxide | soot | carbon dioxide | experiments | oxygen | mathematical models | equations | temperature | simulation
- Identifiers
- calculation of products; sub-models for species yields rate; normalised yield model; under ventilated polymer fires; TOXFIRE; carbon recovery in the opening window and in the duct
- Abstract
- A practical CFD method is presented to predict the toxic gases in enclosure fires in this study. The concept of local equivalence ratio is applied in this method. The heat released from combustion is calculated with the volumetric heat source model. The concentrations of carbon monoxide, carbon dioxide, hydrocarbon, soot and oxygen are calculated based on the concept of local equivalence ratio. Two experiments are simulated using this relatively simple approach. It is shown that the predictions based on the local equivalence ratio concept are in good agreement with the test results.