Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation Factors
Heat release rate (HRR) of the design fire is the most important parameter in assessing building fire hazards. However, HRR in room fire was only studied by computational fluid dynamics (CFD) in most of the projects determining fire safety provisions by performance-based design. In contrast to ten y...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
|
| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/910869 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849308133758861312 |
|---|---|
| author | N. Cai W. K. Chow |
| author_facet | N. Cai W. K. Chow |
| author_sort | N. Cai |
| collection | DOAJ |
| description | Heat release rate (HRR) of the design fire is the most important parameter in assessing building fire hazards. However, HRR in room fire was only studied by computational fluid dynamics (CFD) in most of the projects determining fire safety provisions by performance-based design. In contrast to ten years ago, officers in the Far East are now having better knowledge of CFD. Two common questions are raised on CFD-predicted results on describing free boundaries; and on computing grid size. In this work, predicting HRR by the CFD model was justified with experimental room pool fire data reported earlier. The software fire dynamics simulator (FDS) version 5 was selected as the CFD simulation tool. Prescribed input heating rate based on the experimental results was used with the liquid fuel model in FDS. Five different free boundary conditions were investigated to predict HRR. Grid sensitivity study was carried out using one stretched mesh and multiple uniform meshes with different grid sizes. As it is difficult to have the entire set of CFD predicted results agreed with experiments, macroscopic flow parameters on the mass flow rate through door opening predicted by CFD were also justified by another four conditions with different ventilation factors. |
| format | Article |
| id | doaj-art-141d5c87ea1f466bb1999648470327bb |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-141d5c87ea1f466bb1999648470327bb2025-08-20T03:54:33ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782012-01-01201210.1155/2012/910869910869Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation FactorsN. Cai0W. K. Chow1Department of Building Services Engineering, Research Centre for Fire Engineering, The Hong Kong Polytechnic University, Hong KongDepartment of Building Services Engineering, Research Centre for Fire Engineering, The Hong Kong Polytechnic University, Hong KongHeat release rate (HRR) of the design fire is the most important parameter in assessing building fire hazards. However, HRR in room fire was only studied by computational fluid dynamics (CFD) in most of the projects determining fire safety provisions by performance-based design. In contrast to ten years ago, officers in the Far East are now having better knowledge of CFD. Two common questions are raised on CFD-predicted results on describing free boundaries; and on computing grid size. In this work, predicting HRR by the CFD model was justified with experimental room pool fire data reported earlier. The software fire dynamics simulator (FDS) version 5 was selected as the CFD simulation tool. Prescribed input heating rate based on the experimental results was used with the liquid fuel model in FDS. Five different free boundary conditions were investigated to predict HRR. Grid sensitivity study was carried out using one stretched mesh and multiple uniform meshes with different grid sizes. As it is difficult to have the entire set of CFD predicted results agreed with experiments, macroscopic flow parameters on the mass flow rate through door opening predicted by CFD were also justified by another four conditions with different ventilation factors.http://dx.doi.org/10.1155/2012/910869 |
| spellingShingle | N. Cai W. K. Chow Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation Factors International Journal of Chemical Engineering |
| title | Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation Factors |
| title_full | Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation Factors |
| title_fullStr | Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation Factors |
| title_full_unstemmed | Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation Factors |
| title_short | Numerical Studies on Heat Release Rate in Room Fire on Liquid Fuel under Different Ventilation Factors |
| title_sort | numerical studies on heat release rate in room fire on liquid fuel under different ventilation factors |
| url | http://dx.doi.org/10.1155/2012/910869 |
| work_keys_str_mv | AT ncai numericalstudiesonheatreleaserateinroomfireonliquidfuelunderdifferentventilationfactors AT wkchow numericalstudiesonheatreleaserateinroomfireonliquidfuelunderdifferentventilationfactors |