RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber
A laboratory-scale chamber is convenient for combustion scenarios in the practical analysis of industrial explosions and devices such as internal combustion engines. The safety risks in hazardous areas can be assessed and managed during accidents. Increased hydrogen usage in renewable energy product...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/18/5710 |
| _version_ | 1797519522796666880 |
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| author | Justina Jaseliūnaitė Mantas Povilaitis Ieva Stučinskaitė |
| author_facet | Justina Jaseliūnaitė Mantas Povilaitis Ieva Stučinskaitė |
| author_sort | Justina Jaseliūnaitė |
| collection | DOAJ |
| description | A laboratory-scale chamber is convenient for combustion scenarios in the practical analysis of industrial explosions and devices such as internal combustion engines. The safety risks in hazardous areas can be assessed and managed during accidents. Increased hydrogen usage in renewable energy production requires increased attention to the safety issues since hydrogen produces higher explosion overpressures and flame speed and can cause more damage than methane or propane. This paper reports numerical simulation of turbulent hydrogen combustion and flame propagation in the University of Sydney's small-scale combustion chamber. It is used for the investigation of turbulent premixed propagating flame interaction with several solid obstacles. Obstructions in the direction of flow cause a complex flame front interaction with the turbulence generated ahead of it. For numerical analysis, OpenFOAM CFD software was chosen, and a custom-built turbulent combustion solver based on the progress variable model—flameFoam—was used. Numerical results for validation purposes show that the pressure behaviour and flame propagation obtained using RANS and TFC models were well reproduced. The interaction between larger-scale flow features and flame dynamics was obtained corresponding to the experimental or mode detailed LES modelling results from the literature. The analysis revealed that as the propagating flame reached and interacted with obstacles and the recirculation wake was created behind solid obstacles, leaving traces of an unburned mixture. The expansion of flames due to narrow vents generates turbulent eddies, which cause wrinkling of the flame front. |
| first_indexed | 2024-03-10T07:43:59Z |
| format | Article |
| id | doaj.art-e0ea0b91c34b407481ff2c6ab3f751f8 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T07:43:59Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e0ea0b91c34b407481ff2c6ab3f751f82023-11-22T12:51:54ZengMDPI AGEnergies1996-10732021-09-011418571010.3390/en14185710RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting ChamberJustina Jaseliūnaitė0Mantas Povilaitis1Ieva Stučinskaitė2Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos Str. 3, LT-44403 Kaunas, LithuaniaLaboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos Str. 3, LT-44403 Kaunas, LithuaniaLaboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos Str. 3, LT-44403 Kaunas, LithuaniaA laboratory-scale chamber is convenient for combustion scenarios in the practical analysis of industrial explosions and devices such as internal combustion engines. The safety risks in hazardous areas can be assessed and managed during accidents. Increased hydrogen usage in renewable energy production requires increased attention to the safety issues since hydrogen produces higher explosion overpressures and flame speed and can cause more damage than methane or propane. This paper reports numerical simulation of turbulent hydrogen combustion and flame propagation in the University of Sydney's small-scale combustion chamber. It is used for the investigation of turbulent premixed propagating flame interaction with several solid obstacles. Obstructions in the direction of flow cause a complex flame front interaction with the turbulence generated ahead of it. For numerical analysis, OpenFOAM CFD software was chosen, and a custom-built turbulent combustion solver based on the progress variable model—flameFoam—was used. Numerical results for validation purposes show that the pressure behaviour and flame propagation obtained using RANS and TFC models were well reproduced. The interaction between larger-scale flow features and flame dynamics was obtained corresponding to the experimental or mode detailed LES modelling results from the literature. The analysis revealed that as the propagating flame reached and interacted with obstacles and the recirculation wake was created behind solid obstacles, leaving traces of an unburned mixture. The expansion of flames due to narrow vents generates turbulent eddies, which cause wrinkling of the flame front.https://www.mdpi.com/1996-1073/14/18/5710flow structuresturbulent flame propagationhydrogen combustioncomputational fluid dynamics (CFD)industrial safety |
| spellingShingle | Justina Jaseliūnaitė Mantas Povilaitis Ieva Stučinskaitė RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber Energies flow structures turbulent flame propagation hydrogen combustion computational fluid dynamics (CFD) industrial safety |
| title | RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber |
| title_full | RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber |
| title_fullStr | RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber |
| title_full_unstemmed | RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber |
| title_short | RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber |
| title_sort | rans and tfc based simulation of turbulent combustion in a small scale venting chamber |
| topic | flow structures turbulent flame propagation hydrogen combustion computational fluid dynamics (CFD) industrial safety |
| url | https://www.mdpi.com/1996-1073/14/18/5710 |
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