FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINE
The processes of flame penetration and propagation in a narrow annular gap between the piston and cylinder of a hydrogen piston engine are investigated by the method of 3D mathematical modeling. The model is verified by comparing the changes in pressure and heat release rate in the cylinder obtained...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Silesian University of Technology
2023-09-01
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| Series: | Transport Problems |
| Subjects: | |
| Online Access: | http://transportproblems.polsl.pl/pl/Archiwum/2023/zeszyt3/2023t18z3_16.pdf |
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| author | Revaz KAVTARADZE Tamaz NATRIASHVILI Merab GLONTI Giorgi CHILASVILI Otar GELASHVILI Jumber IOSEBIDZE |
| author_facet | Revaz KAVTARADZE Tamaz NATRIASHVILI Merab GLONTI Giorgi CHILASVILI Otar GELASHVILI Jumber IOSEBIDZE |
| author_sort | Revaz KAVTARADZE |
| collection | DOAJ |
| description | The processes of flame penetration and propagation in a narrow annular gap between the piston and cylinder of a hydrogen piston engine are investigated by the method of 3D mathematical modeling. The model is verified by comparing the changes in pressure and heat release rate in the cylinder obtained from an experimental hydrogen engine, considering the data collected during numerical experiments. The movement of the flame front into the gap is analyzed by changes in the instantaneous local values of the hydrogen fractions in the mixture and the local temperatures of the cold gas (unburned mixture) and combustion products. A comparative analysis of the spread of gasoline and hydrogen flames is carried out. The phenomenon of increasing heat losses in the combustion chamber of a hydrogen engine compared to a gasoline engine, previously confirmed experimentally by different authors and not yet having an acceptable theoretical interpretation, is explained by neglecting the role of heat transfer in the indicated gap. |
| format | Article |
| id | doaj-art-6234e2f0f53847ff89ed0db6c5228239 |
| institution | Kabale University |
| issn | 1896-0596 2300-861X |
| language | English |
| publishDate | 2023-09-01 |
| publisher | Silesian University of Technology |
| record_format | Article |
| series | Transport Problems |
| spelling | doaj-art-6234e2f0f53847ff89ed0db6c52282392025-01-21T15:41:27ZengSilesian University of TechnologyTransport Problems1896-05962300-861X2023-09-0118318919710.20858/tp.2023.18.3.16FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINERevaz KAVTARADZE0https://orcid.org/0000-0001-9585-9245Tamaz NATRIASHVILI1https://orcid.org/0000-0001-9141-3641Merab GLONTI2https://orcid.org/0000-0003-2711-5089Giorgi CHILASVILI3https://orcid.org/0009-0006-4902-9076Otar GELASHVILI4https://orcid.org/0009-0002-4055-1176Jumber IOSEBIDZE5https://orcid.org/0009-0009-2591-9973Rafael Dvali Institute of Machine MechanicRafael Dvali Institute of Machine MechanicRafael Dvali Institute of Machine MechanicRafael Dvali Institute of Machine MechanicGeorgian Technical UniversityGeorgian Technical UniversityThe processes of flame penetration and propagation in a narrow annular gap between the piston and cylinder of a hydrogen piston engine are investigated by the method of 3D mathematical modeling. The model is verified by comparing the changes in pressure and heat release rate in the cylinder obtained from an experimental hydrogen engine, considering the data collected during numerical experiments. The movement of the flame front into the gap is analyzed by changes in the instantaneous local values of the hydrogen fractions in the mixture and the local temperatures of the cold gas (unburned mixture) and combustion products. A comparative analysis of the spread of gasoline and hydrogen flames is carried out. The phenomenon of increasing heat losses in the combustion chamber of a hydrogen engine compared to a gasoline engine, previously confirmed experimentally by different authors and not yet having an acceptable theoretical interpretation, is explained by neglecting the role of heat transfer in the indicated gap.http://transportproblems.polsl.pl/pl/Archiwum/2023/zeszyt3/2023t18z3_16.pdfhydrogen engine3d mathematical modelingannular gapflame propagation |
| spellingShingle | Revaz KAVTARADZE Tamaz NATRIASHVILI Merab GLONTI Giorgi CHILASVILI Otar GELASHVILI Jumber IOSEBIDZE FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINE Transport Problems hydrogen engine 3d mathematical modeling annular gap flame propagation |
| title | FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINE |
| title_full | FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINE |
| title_fullStr | FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINE |
| title_full_unstemmed | FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINE |
| title_short | FLAME PROPAGATION IN A NARROW GAP BETWEEN THE PISTON AND CYLINDER OF A HYDROGEN ENGINE |
| title_sort | flame propagation in a narrow gap between the piston and cylinder of a hydrogen engine |
| topic | hydrogen engine 3d mathematical modeling annular gap flame propagation |
| url | http://transportproblems.polsl.pl/pl/Archiwum/2023/zeszyt3/2023t18z3_16.pdf |
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