Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics Mechanisms
The present paper compares full kinetics mechanisms in numerical modelling of porous radiant burners (PRB), with their reduced forms. The two most frequently used mechanisms of methane combustion (GRI3.0 and Miller) were selected and their effects were examined on temperature, species concentration,...
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2008-03-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
| Subjects: | |
| Online Access: | http://www.ijcce.ac.ir/article_7012_446b9949155fed97f85b8a16a937f589.pdf |
| _version_ | 1818643250140938240 |
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| author | Mostafa Khosravy El-Hossaini Mehdi Maerefat Kiumars Mazaheri |
| author_facet | Mostafa Khosravy El-Hossaini Mehdi Maerefat Kiumars Mazaheri |
| author_sort | Mostafa Khosravy El-Hossaini |
| collection | DOAJ |
| description | The present paper compares full kinetics mechanisms in numerical modelling of porous radiant burners (PRB), with their reduced forms. The two most frequently used mechanisms of methane combustion (GRI3.0 and Miller) were selected and their effects were examined on temperature, species concentration, burning speed, and pollutant emission. While the findings of numerical simulation of PRB show fine concurrence between each full mechanism and its related reduced mechanism, no significant temperature differences are observed in the results of full mechanisms. However, CO concentration along burner axis shows a small difference between two full mechanisms, which is related to HCO and HO2 concentrations. The inconsistency is more pronounced for NO concentration along porous axis, which is due to prompt NO evaluation. The present research finds deviation also between burning speeds, calculated by numerical simulation and experimental results. This difference is much more significant in rich mixtures. GRI3.0 mechanism estimated the burning velocities as closer to the experimental values than those predicted using Miller mechanism. |
| first_indexed | 2024-12-16T23:55:58Z |
| format | Article |
| id | doaj.art-bdaf9aec677f43089a6d843f48aba320 |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-12-16T23:55:58Z |
| publishDate | 2008-03-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-bdaf9aec677f43089a6d843f48aba3202022-12-21T22:11:12ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862008-03-0127153637012Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics MechanismsMostafa Khosravy El-Hossaini0Mehdi Maerefat1Kiumars Mazaheri2Department of Mechanical Engineering, Faculty of Engineering, Tarbiat Modares University, P.O. Box 14115-111 Tehran, I.R. IRANDepartment of Mechanical Engineering, Faculty of Engineering, Tarbiat Modares University, P.O. Box 14115-111 Tehran, I.R. IRANDepartment of Mechanical Engineering, Faculty of Engineering, Tarbiat Modares University, P.O. Box 14115-111 Tehran, I.R. IRANThe present paper compares full kinetics mechanisms in numerical modelling of porous radiant burners (PRB), with their reduced forms. The two most frequently used mechanisms of methane combustion (GRI3.0 and Miller) were selected and their effects were examined on temperature, species concentration, burning speed, and pollutant emission. While the findings of numerical simulation of PRB show fine concurrence between each full mechanism and its related reduced mechanism, no significant temperature differences are observed in the results of full mechanisms. However, CO concentration along burner axis shows a small difference between two full mechanisms, which is related to HCO and HO2 concentrations. The inconsistency is more pronounced for NO concentration along porous axis, which is due to prompt NO evaluation. The present research finds deviation also between burning speeds, calculated by numerical simulation and experimental results. This difference is much more significant in rich mixtures. GRI3.0 mechanism estimated the burning velocities as closer to the experimental values than those predicted using Miller mechanism.http://www.ijcce.ac.ir/article_7012_446b9949155fed97f85b8a16a937f589.pdffull kinetics mechanismreduced mechanismporous radiant burnernumerical simulation |
| spellingShingle | Mostafa Khosravy El-Hossaini Mehdi Maerefat Kiumars Mazaheri Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics Mechanisms Iranian Journal of Chemistry & Chemical Engineering full kinetics mechanism reduced mechanism porous radiant burner numerical simulation |
| title | Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics Mechanisms |
| title_full | Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics Mechanisms |
| title_fullStr | Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics Mechanisms |
| title_full_unstemmed | Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics Mechanisms |
| title_short | Numerical Modelling of Porous Radiant Burners Using Full and Reduced Kinetics Mechanisms |
| title_sort | numerical modelling of porous radiant burners using full and reduced kinetics mechanisms |
| topic | full kinetics mechanism reduced mechanism porous radiant burner numerical simulation |
| url | http://www.ijcce.ac.ir/article_7012_446b9949155fed97f85b8a16a937f589.pdf |
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