Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a Fire
Numerical simulations, based on the theories of computational fluid dynamics and combustion, are currently a powerful tool in the field of fire engineering. Field models allow us to analyze key aspects such as the integrity of buildings and safety. However, it is fundamental to define strategies tha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Fire |
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| Online Access: | https://www.mdpi.com/2571-6255/6/11/413 |
| _version_ | 1797459335320698880 |
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| author | Carlos Muñoz-Blanc |
| author_facet | Carlos Muñoz-Blanc |
| author_sort | Carlos Muñoz-Blanc |
| collection | DOAJ |
| description | Numerical simulations, based on the theories of computational fluid dynamics and combustion, are currently a powerful tool in the field of fire engineering. Field models allow us to analyze key aspects such as the integrity of buildings and safety. However, it is fundamental to define strategies that allow engineers to obtain a balance between the precision of the results and the computational cost. One of the most relevant sub-models is the turbulence model. This paper presents the research carried out in the field of two-dimensional computational simulations of turbulent dilatable flows to evaluate the behavior of diffusion flames, hot gases, and smoke produced in accidental fires. Several computational simulations have been performed using direct numerical simulations and large eddy simulation turbulence models in the two-dimensional field, analyzing the ability of the models to correctly characterize the transport of hot gases and the behavior of the thermal plumes if the grid resolution is adequate to the physics of the problem. Additionally, several three-dimensional models have been developed to contrast and validate the results obtained in the two-dimensional simulations. In order to validate the capacity to develop a qualitative analysis of two-dimensional models in fire engineering, an evaluation criterion is presented based on the frequency spectral analysis to study the capacity of each type of turbulence model to accurately capture the vorticity of these dilatable flows. |
| first_indexed | 2024-03-09T16:50:58Z |
| format | Article |
| id | doaj.art-8270d7f5e2754a139571a5bd869aad2e |
| institution | Directory Open Access Journal |
| issn | 2571-6255 |
| language | English |
| last_indexed | 2024-03-09T16:50:58Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fire |
| spelling | doaj.art-8270d7f5e2754a139571a5bd869aad2e2023-11-24T14:41:31ZengMDPI AGFire2571-62552023-10-0161141310.3390/fire6110413Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a FireCarlos Muñoz-Blanc0Serra Hunter Fellow, Department of Architectural Technology (TA), Barcelona School of Architecture, Universitat Politècnica de Catalunya (UPC), 08028 Barcelona, SpainNumerical simulations, based on the theories of computational fluid dynamics and combustion, are currently a powerful tool in the field of fire engineering. Field models allow us to analyze key aspects such as the integrity of buildings and safety. However, it is fundamental to define strategies that allow engineers to obtain a balance between the precision of the results and the computational cost. One of the most relevant sub-models is the turbulence model. This paper presents the research carried out in the field of two-dimensional computational simulations of turbulent dilatable flows to evaluate the behavior of diffusion flames, hot gases, and smoke produced in accidental fires. Several computational simulations have been performed using direct numerical simulations and large eddy simulation turbulence models in the two-dimensional field, analyzing the ability of the models to correctly characterize the transport of hot gases and the behavior of the thermal plumes if the grid resolution is adequate to the physics of the problem. Additionally, several three-dimensional models have been developed to contrast and validate the results obtained in the two-dimensional simulations. In order to validate the capacity to develop a qualitative analysis of two-dimensional models in fire engineering, an evaluation criterion is presented based on the frequency spectral analysis to study the capacity of each type of turbulence model to accurately capture the vorticity of these dilatable flows.https://www.mdpi.com/2571-6255/6/11/413two-dimensional turbulencecomputational fluid dynamicscoherent structuresspectral analysisfilamentary vorticityfast Fourier transform |
| spellingShingle | Carlos Muñoz-Blanc Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a Fire Fire two-dimensional turbulence computational fluid dynamics coherent structures spectral analysis filamentary vorticity fast Fourier transform |
| title | Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a Fire |
| title_full | Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a Fire |
| title_fullStr | Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a Fire |
| title_full_unstemmed | Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a Fire |
| title_short | Numerical Simulation of Two-Dimensional Turbulent Dilatable Flows in a Fire |
| title_sort | numerical simulation of two dimensional turbulent dilatable flows in a fire |
| topic | two-dimensional turbulence computational fluid dynamics coherent structures spectral analysis filamentary vorticity fast Fourier transform |
| url | https://www.mdpi.com/2571-6255/6/11/413 |
| work_keys_str_mv | AT carlosmunozblanc numericalsimulationoftwodimensionalturbulentdilatableflowsinafire |