2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation Engine
Two-dimensional computational fluid dynamics (CFD) simulation with selected kinetics for H2–air mixture of a hydrogen-fuelled single-pulse detonation engine were performed through ANSYS FLUENT commercial software for diagnostic purposes. The results were compared with Chapman–Jouguet (CJ) values cal...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2019-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=49405&issue_ID=1001 |
| _version_ | 1818551514621280256 |
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| author | E. C. Maciel C. S. T. Marques |
| author_facet | E. C. Maciel C. S. T. Marques |
| author_sort | E. C. Maciel |
| collection | DOAJ |
| description | Two-dimensional computational fluid dynamics (CFD) simulation with selected kinetics for H2–air mixture of a hydrogen-fuelled single-pulse detonation engine were performed through ANSYS FLUENT commercial software for diagnostic purposes. The results were compared with Chapman–Jouguet (CJ) values calculated by the CEA (Chemical Equilibrium with Applications) and ZND (Zel’dovich–Neumann–Döring) codes. The CJ velocities and pressures, as the product velocities are in agreement, however, the CJ temperatures are too higher for 2-D simulations; as a consequence, the sound velocities were overpredicted. OH* kinetics added to the reaction set allowed visualization of the propagation front with several detonation cells showing a consistent multi-headed detonation propagating in the whole tube. The detonation front was slightly perturbed at the end of the tube with inclination of front edge and fewer cell numbers, and more significantly at the nozzle entrance with velocity reduction, resulting in a weak and unstable detonation. OH* images showed the detonation reaction zone decoupled from the shock front with disappearance of cellular structure. The inclusion of OH* reaction set for CFD simulation coupled to kinetics is demonstrated to be an excellent tool to follow the detonation propagation behaviour. |
| first_indexed | 2024-12-12T09:00:54Z |
| format | Article |
| id | doaj.art-6dc4e1190d4a4955b4f8fdfbdbb44b16 |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-12-12T09:00:54Z |
| publishDate | 2019-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-6dc4e1190d4a4955b4f8fdfbdbb44b162022-12-22T00:29:50ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722019-01-0112412491263.2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation EngineE. C. Maciel0C. S. T. Marques1Technological Institute of Aeronautics, São José dos Campos, SP, 12228-900, BrazilAerothermodynamics and Hypersonics Division, Institute for Advanced Studies, São José dos Campos, SP, 12228-001, BrazilTwo-dimensional computational fluid dynamics (CFD) simulation with selected kinetics for H2–air mixture of a hydrogen-fuelled single-pulse detonation engine were performed through ANSYS FLUENT commercial software for diagnostic purposes. The results were compared with Chapman–Jouguet (CJ) values calculated by the CEA (Chemical Equilibrium with Applications) and ZND (Zel’dovich–Neumann–Döring) codes. The CJ velocities and pressures, as the product velocities are in agreement, however, the CJ temperatures are too higher for 2-D simulations; as a consequence, the sound velocities were overpredicted. OH* kinetics added to the reaction set allowed visualization of the propagation front with several detonation cells showing a consistent multi-headed detonation propagating in the whole tube. The detonation front was slightly perturbed at the end of the tube with inclination of front edge and fewer cell numbers, and more significantly at the nozzle entrance with velocity reduction, resulting in a weak and unstable detonation. OH* images showed the detonation reaction zone decoupled from the shock front with disappearance of cellular structure. The inclusion of OH* reaction set for CFD simulation coupled to kinetics is demonstrated to be an excellent tool to follow the detonation propagation behaviour.http://jafmonline.net/JournalArchive/download?file_ID=49405&issue_ID=1001Computational fluid dynamics; Pulse detonation engine; OH* kinetics; OH* images; Diagnostics. |
| spellingShingle | E. C. Maciel C. S. T. Marques 2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation Engine Journal of Applied Fluid Mechanics Computational fluid dynamics; Pulse detonation engine; OH* kinetics; OH* images; Diagnostics. |
| title | 2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation Engine |
| title_full | 2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation Engine |
| title_fullStr | 2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation Engine |
| title_full_unstemmed | 2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation Engine |
| title_short | 2-D Simulation with OH* Kinetics of a Single-Cycle Pulse Detonation Engine |
| title_sort | 2 d simulation with oh kinetics of a single cycle pulse detonation engine |
| topic | Computational fluid dynamics; Pulse detonation engine; OH* kinetics; OH* images; Diagnostics. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=49405&issue_ID=1001 |
| work_keys_str_mv | AT ecmaciel 2dsimulationwithohkineticsofasinglecyclepulsedetonationengine AT cstmarques 2dsimulationwithohkineticsofasinglecyclepulsedetonationengine |