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Oxyhydrogen combustion and detonation driven shock tube

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Abstract

The performance of combustion driver ignited by multi-spark plugs distributed along axial direction has been analysed and tested. An improved ignition method with three circumferential equidistributed ignitors at main diaphragm has been presented, by which the produced incident shock waves have higher repeatability, and better steadiness in the pressure, temperature and velocity fields of flow behind the incidence shock, and thus meets the requirements of aerodynamic experiment. The attachment of a damping section at the end of the driver can eliminate the high reflection pressure produced by detonation wave, and the backward detonation driver can be employed to generate high enthalpy and high density test flow. The incident shock wave produced by this method is well repeated and with weak attenuation. The reflection wave caused by the contracted section at the main diaphragm will weaken the unfavorable effect of rarefaction wave behind the detonation wave, which indicates that the forward detonation driver can be applied in the practice. For incident shock wave of identical strength, the initial pressure of the forward detonation driver is about 1 order of magnitude lower than that of backward detonation.

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Authors and Affiliations

  1. LHD, Institute of Mechanics, Chinese Academy of Sciences, 100080, Beijing, China

    Yu Hongru

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  1. Yu Hongru
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Additional information

In memory of academician Kuo Yonghuai's 90th anniversary.

The project supported by State Science and Technology Committee, National Natural Foundation of Science of China (19082012), Chinese Academy of Sciences and Project of National High Technology of China.

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Hongru, Y. Oxyhydrogen combustion and detonation driven shock tube. Acta Mech Sinica 15, 97–107 (1999). https://doi.org/10.1007/BF02485874

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  • DOI: https://doi.org/10.1007/BF02485874

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