Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard Assessment
The flow field driven by a compartment fire usually contains several flow zones with different physical structures. As each type of turbulence model has its own predominant application area, it is logical to apply two or more simple turbulence models to the same fire-induced flow field at different...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Fire |
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| Online Access: | https://www.mdpi.com/2571-6255/6/4/134 |
| _version_ | 1797605488474456064 |
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| author | Wai Kuen Mok Wan Ki Chow |
| author_facet | Wai Kuen Mok Wan Ki Chow |
| author_sort | Wai Kuen Mok |
| collection | DOAJ |
| description | The flow field driven by a compartment fire usually contains several flow zones with different physical structures. As each type of turbulence model has its own predominant application area, it is logical to apply two or more simple turbulence models to the same fire-induced flow field at different locations according to their predominant features to yield a comparatively simple, accurate, and stable zonal turbulence model. A zonal turbulence model, which is a hybrid of the standard <i>k-ε</i> model and its modification, is developed in this paper. The model is tested and compared with the experimental data. A promising improvement is observed when comparing it with the base turbulence model, i.e., the standard k-ε model, especially in the recirculating region near the corners of the compartment. This approach in having different zones in the plume region will be useful for handling more scenarios at the initial stage of fire hazard assessments. |
| first_indexed | 2024-03-11T05:01:49Z |
| format | Article |
| id | doaj.art-1da906a9d34a4dd2878c1096e2e230ac |
| institution | Directory Open Access Journal |
| issn | 2571-6255 |
| language | English |
| last_indexed | 2024-03-11T05:01:49Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fire |
| spelling | doaj.art-1da906a9d34a4dd2878c1096e2e230ac2023-11-17T19:11:37ZengMDPI AGFire2571-62552023-03-016413410.3390/fire6040134Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard AssessmentWai Kuen Mok0Wan Ki Chow1Department of Building Environment and Energy Engineering, The Hong Kong Polytechnic University, Hong Kong, ChinaDepartment of Building Environment and Energy Engineering, The Hong Kong Polytechnic University, Hong Kong, ChinaThe flow field driven by a compartment fire usually contains several flow zones with different physical structures. As each type of turbulence model has its own predominant application area, it is logical to apply two or more simple turbulence models to the same fire-induced flow field at different locations according to their predominant features to yield a comparatively simple, accurate, and stable zonal turbulence model. A zonal turbulence model, which is a hybrid of the standard <i>k-ε</i> model and its modification, is developed in this paper. The model is tested and compared with the experimental data. A promising improvement is observed when comparing it with the base turbulence model, i.e., the standard k-ε model, especially in the recirculating region near the corners of the compartment. This approach in having different zones in the plume region will be useful for handling more scenarios at the initial stage of fire hazard assessments.https://www.mdpi.com/2571-6255/6/4/134computational fluid dynamicsfield modeling simulationzonal turbulence modelcompartment fire simulation |
| spellingShingle | Wai Kuen Mok Wan Ki Chow Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard Assessment Fire computational fluid dynamics field modeling simulation zonal turbulence model compartment fire simulation |
| title | Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard Assessment |
| title_full | Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard Assessment |
| title_fullStr | Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard Assessment |
| title_full_unstemmed | Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard Assessment |
| title_short | Zonal Turbulence Modeling Approach for Simulating Compartment Fire for Initial Hazard Assessment |
| title_sort | zonal turbulence modeling approach for simulating compartment fire for initial hazard assessment |
| topic | computational fluid dynamics field modeling simulation zonal turbulence model compartment fire simulation |
| url | https://www.mdpi.com/2571-6255/6/4/134 |
| work_keys_str_mv | AT waikuenmok zonalturbulencemodelingapproachforsimulatingcompartmentfireforinitialhazardassessment AT wankichow zonalturbulencemodelingapproachforsimulatingcompartmentfireforinitialhazardassessment |