Unsteady characteristics of jet combustion in a supersonic combustor with a micro-vortex generator
Abstract
To clarify the effect of the micro-vortex generator on the unsteady characteristics of jet combustion, a set of experiments had been carried out in a cavity-based supersonic combustor. Based on the advanced combustion diagnosis techniques, the ignition process, initial cavity-stabilized flame and dynamic flame development at the initial equivalence ratio of 0.20 are revealed in detail. Although the ignition processes are identical, the time for the flame propagation process in the cavity can be shortened when an MVG (micro-vortex generator) is located properly upstream of the injection. The initial flame cannot be stabilized in the combustor if the MVG is too close to the injection. After achieving initial stable combustion, the chemical reactions in the flame front are more vigorous and the shear layer can be lifted a little higher in the experiment with an MVG. At the same dynamic fuel adjustment method, the flame can be stabilized in the combustor without an MVG while the flame is blown out with an MVG. Based on numerous experimental results, it is found that the MVG dwindles the adjustment range of the dynamic injection, which makes against the stability of the flame when the engine decreases the thrust.
References
- 1. , Int. J. Hydrog. Energy 45 (2020) 27806. Crossref, Web of Science, Google Scholar
- 2. , J. Propul. Power 17 (2001) 869. Crossref, Web of Science, Google Scholar
- 3. , Int. J. Hydrog. Energy 44 (2019) 13895. Crossref, Web of Science, Google Scholar
- 4. , Aerosp. Sci. Technol. 106 (2020) 106186. Crossref, Web of Science, Google Scholar
- 5. , Mod. Phys. Lett. B 34(18) (2020) 2050208. Link, Web of Science, ADS, Google Scholar
- 6. , AIAA J. 55 (2017) 544. Crossref, ADS, Google Scholar
- 7. , P. Combust. Inst. 32 (2009) 2397. Crossref, Web of Science, Google Scholar
- 8. , Analysis and correlation of flame stability limits in supersonic flow with cavity flameholder, in 18th AIAA/3AF Int. Space Planes and Hypersonic Systems and Technologies Conf. (Tours, France, 2012). Google Scholar
- 9. , J. Therm. Sci. Tech. Jpn. 30 (2010) 57. Web of Science, Google Scholar
- 10. , Int. J. Hydrog. Energy 38 (2013) 12078. Crossref, Web of Science, Google Scholar
- 11. , Int. J. Hydrog. Energy 41 (2016) 19218. Crossref, Web of Science, Google Scholar
- 12. , Aerosp. Sci. Technol. 82–83 (2018) 9. Crossref, Web of Science, Google Scholar
- 13. , Aerosp. Sci. Technol. 68 (2017) 77. Crossref, Web of Science, Google Scholar
- 14. , Int. Commun. Heat Mass. 85 (2017) 114. Crossref, Web of Science, Google Scholar
- 15. , Int. J. Hydrog. Energy 46 (2021) 16075. Crossref, Web of Science, Google Scholar
- 16. , J. Propul. Power 15 (1999) 432. Crossref, Web of Science, Google Scholar
- 17. , Aeronaut. J. 113 (2009) 683. Crossref, Web of Science, Google Scholar
- 18. , Acta Astronaut. 127 (2016) 160. Crossref, Web of Science, ADS, Google Scholar
- 19. , Aerosp. Sci. Technol. 84 (2019) 570. Crossref, Web of Science, Google Scholar
- 20. , J. Propul. Power 30 (2014) 426. Crossref, Web of Science, Google Scholar
- 21. , Aerosp. Sci. Technol. 47 (2015) 210. Crossref, Web of Science, Google Scholar
- 22. , Energies 14 (2021) 2522. Crossref, Web of Science, Google Scholar
- 23. , Acta Astronaut. 187 (2021) 315. Crossref, Web of Science, ADS, Google Scholar
Remember to check out the Most Cited Articles! |
---|
Boost your collection with these New Books in Condensed Matter Physics today! |