Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air Flames
The propagation speeds of premixed <i>n</i>-butane–air mixtures (2.0–5.7 vol%) were investigated under various initial conditions (pressures of 0.4–1.2 bar; temperatures of 289–500 K). The study consists of both, experimental measurements using two different enclosures (a sphere and a cy...
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MDPI AG
2023-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/15/5728 |
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| author | Domnina Razus Codina Movileanu Maria Mitu Venera Giurcan |
| author_facet | Domnina Razus Codina Movileanu Maria Mitu Venera Giurcan |
| author_sort | Domnina Razus |
| collection | DOAJ |
| description | The propagation speeds of premixed <i>n</i>-butane–air mixtures (2.0–5.7 vol%) were investigated under various initial conditions (pressures of 0.4–1.2 bar; temperatures of 289–500 K). The study consists of both, experimental measurements using two different enclosures (a sphere and a cylinder) and kinetic modeling via a dedicated computing program. The propagation speeds of premixed <i>n</i>-butane–air mixtures were obtained via the adiabatic model of flame propagation, which allows us to obtain these important parameters using the normal burning velocities and expansion coefficients. The expansion coefficients were calculated using thermodynamic data as the ratio of burnt to unburnt gas densities, assuming that an equilibrium was established in the flame front. The propagation speeds obtained based on the experimental burning velocities were analyzed for comparison with the computed velocities. Finally, the dependence of the propagation speed on the initial pressure and temperature was discussed. |
| first_indexed | 2024-03-11T00:28:45Z |
| format | Article |
| id | doaj.art-c42d6bca277346c494716535c9c682b3 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T00:28:45Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c42d6bca277346c494716535c9c682b32023-11-18T22:52:02ZengMDPI AGEnergies1996-10732023-07-011615572810.3390/en16155728Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air FlamesDomnina Razus0Codina Movileanu1Maria Mitu2Venera Giurcan3“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, RomaniaThe propagation speeds of premixed <i>n</i>-butane–air mixtures (2.0–5.7 vol%) were investigated under various initial conditions (pressures of 0.4–1.2 bar; temperatures of 289–500 K). The study consists of both, experimental measurements using two different enclosures (a sphere and a cylinder) and kinetic modeling via a dedicated computing program. The propagation speeds of premixed <i>n</i>-butane–air mixtures were obtained via the adiabatic model of flame propagation, which allows us to obtain these important parameters using the normal burning velocities and expansion coefficients. The expansion coefficients were calculated using thermodynamic data as the ratio of burnt to unburnt gas densities, assuming that an equilibrium was established in the flame front. The propagation speeds obtained based on the experimental burning velocities were analyzed for comparison with the computed velocities. Finally, the dependence of the propagation speed on the initial pressure and temperature was discussed.https://www.mdpi.com/1996-1073/16/15/5728<i>n</i>-butaneenclosureexpansion coefficientpropagation speed |
| spellingShingle | Domnina Razus Codina Movileanu Maria Mitu Venera Giurcan Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air Flames Energies <i>n</i>-butane enclosure expansion coefficient propagation speed |
| title | Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air Flames |
| title_full | Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air Flames |
| title_fullStr | Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air Flames |
| title_full_unstemmed | Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air Flames |
| title_short | Expansion Coefficients and Propagation Speeds of Premixed <i>n</i>-Butane–Air Flames |
| title_sort | expansion coefficients and propagation speeds of premixed i n i butane air flames |
| topic | <i>n</i>-butane enclosure expansion coefficient propagation speed |
| url | https://www.mdpi.com/1996-1073/16/15/5728 |
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