On the ignition process in a model scramjet combustor

Yu Pan, Weidong Liu, Jianhan Liang, Zhenguo Wang

doi:10.6052/0459-1879-2009-4-2009-142

Volume 41 Issue 4

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Article Navigation > Chinese Journal of Theoretical and Applied Mechanics > 2009 > 41(4): 455-462

Yu Pan, Weidong Liu, Jianhan Liang, Zhenguo Wang. On the ignition process in a model scramjet combustor[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(4): 455-462. doi: 10.6052/0459-1879-2009-4-2009-142

Citation:

Yu Pan, Weidong Liu, Jianhan Liang, Zhenguo Wang. On the ignition process in a model scramjet combustor[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(4): 455-462. doi: 10.6052/0459-1879-2009-4-2009-142

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On the ignition process in a model scramjet combustor

doi: 10.6052/0459-1879-2009-4-2009-142

Yu Pan, Weidong Liu, Jianhan Liang, Zhenguo Wang

Institute of Aerospace and Material of National University of Defense Technology, Changsha 410073, ChinaInstitute of Aerospace and Material of National University of Defense Technology, Changsha 410073, ChinaInstitute of Aerospace and Material of National University of Defense Technology, Changsha 410073, ChinaInstitute of Aerospace and Material of National University of Defense Technology, Changsha 410073, China

Received Date: 2009-03-16
Rev Recd Date: 2009-06-02
Publish Date: 2009-07-18

Abstract

Abstract

Three processes of ignition were investigated by usinghigh speed camera and schlieren system with the inflow condition ofMa=2.64, T_0=1483K, P_0=1.65MPa, T=724K, andP=76.3kPa, which are autoignition ofhydrogen injection, the spark igniting hydrogen and the pilot flame ignitingthe kerosene in a constant area model scramjet combustor. The flamepropagation and shocktrains evolution in the combusotr was gained, whichrevealed that the flame originated from the downstream of the combustor,then propagated to upstream untill the whole combustor was ignited. Theresults also showed that flow velocity of combustor and installation schemeof flame holders will extremely affect the ignition delay or occurringposition of ignition. Furthermore, the fuel residence time will be increasedby using more cavity flameholders, which was benificial to fuelautoignition.
- Scramjet,
- ignition process,
- flame propagation,
- flame holder