Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor
This work performs an analysis of plasma-assisted non-premixed H<sub>2</sub>-air flames in Y-shaped micro combustors in the presence of field emission dielectric barrier discharge (FE-DBD) plasma actuators. The combustion, flow, and heat transfer characteristics are numerically investiga...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/5/2272 |
| _version_ | 1797615472549560320 |
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| author | Giacomo Cinieri Donato Fontanarosa Maria Grazia De Giorgi |
| author_facet | Giacomo Cinieri Donato Fontanarosa Maria Grazia De Giorgi |
| author_sort | Giacomo Cinieri |
| collection | DOAJ |
| description | This work performs an analysis of plasma-assisted non-premixed H<sub>2</sub>-air flames in Y-shaped micro combustors in the presence of field emission dielectric barrier discharge (FE-DBD) plasma actuators. The combustion, flow, and heat transfer characteristics are numerically investigated, and the effect of sinusoidal plasma discharges on combustion performance is examined at various equivalence ratios (φ). A coupled plasma and chemical kinetic model is implemented, using a zero-dimensional model based on the solution of the Boltzmann equation and the ZDPlasKin toolbox to compute net charges and radical generation rates. The estimated body forces, radical production rates, and power densities in the plasma regions are then coupled with hydrogen combustion in the microchannel. Plasma-assisted combustion reveals improvements in flame length and maximum gas temperature. The results demonstrate that FE-DBDs can enhance mixing and complete the combustion of unreacted fuel, preventing flame extinction. It is shown that even in cases of radical and thermal quenching, these plasma actuators are essential for stabilizing the flame. |
| first_indexed | 2024-03-11T07:26:49Z |
| format | Article |
| id | doaj.art-c285712bd2434dc4864ec32a9682cacb |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T07:26:49Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c285712bd2434dc4864ec32a9682cacb2023-11-17T07:36:29ZengMDPI AGEnergies1996-10732023-02-01165227210.3390/en16052272Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro CombustorGiacomo Cinieri0Donato Fontanarosa1Maria Grazia De Giorgi2Department of Engineering for Innovation, University of Salento, 73100 Lecce, ItalyApplied Mechanics and Energy Conversion (TME), KU Leuven, 3001 Leuven, BelgiumDepartment of Engineering for Innovation, University of Salento, 73100 Lecce, ItalyThis work performs an analysis of plasma-assisted non-premixed H<sub>2</sub>-air flames in Y-shaped micro combustors in the presence of field emission dielectric barrier discharge (FE-DBD) plasma actuators. The combustion, flow, and heat transfer characteristics are numerically investigated, and the effect of sinusoidal plasma discharges on combustion performance is examined at various equivalence ratios (φ). A coupled plasma and chemical kinetic model is implemented, using a zero-dimensional model based on the solution of the Boltzmann equation and the ZDPlasKin toolbox to compute net charges and radical generation rates. The estimated body forces, radical production rates, and power densities in the plasma regions are then coupled with hydrogen combustion in the microchannel. Plasma-assisted combustion reveals improvements in flame length and maximum gas temperature. The results demonstrate that FE-DBDs can enhance mixing and complete the combustion of unreacted fuel, preventing flame extinction. It is shown that even in cases of radical and thermal quenching, these plasma actuators are essential for stabilizing the flame.https://www.mdpi.com/1996-1073/16/5/2272microscale combustionplasma assisted combustionsinusoidal dischargemicroburnersflame wall interactionplasma actuator |
| spellingShingle | Giacomo Cinieri Donato Fontanarosa Maria Grazia De Giorgi Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor Energies microscale combustion plasma assisted combustion sinusoidal discharge microburners flame wall interaction plasma actuator |
| title | Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor |
| title_full | Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor |
| title_fullStr | Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor |
| title_full_unstemmed | Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor |
| title_short | Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor |
| title_sort | combustion characteristics of hydrogen air mixtures in a plasma assisted micro combustor |
| topic | microscale combustion plasma assisted combustion sinusoidal discharge microburners flame wall interaction plasma actuator |
| url | https://www.mdpi.com/1996-1073/16/5/2272 |
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