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Structure of an oblique detonation wave induced by a wedge

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Abstract

The structure of an oblique detonation wave (ODW) induced by a wedge is investigated via numerical simulations and Rankine–Hugoniot analysis. The two-dimensional Euler equations coupled with a two-step chemical reaction model are solved. In the numerical results, four configurations of the Chapman–Jouguet (CJ) ODW reflection (overall Mach reflection, Mach reflection, regular reflection, and non-reflection) are observed to take place sequentially as the inflow Mach number increases. According to the numerical and analytical results, the change of the CJ ODW reflection configuration results from the interaction among the ODW, the CJ ODW, and the centered expansion wave.

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Abbreviations

ODW:

Oblique detonation wave

OSW:

Oblique shock wave

CJ ODW:

Chapman–Jouguet oblique detonation wave (which locates at the end of the induction region)

CEW:

Centered expansion wave (which locates behind the CJ ODW)

RCEW:

Reflected expansion wave of the CEW

ROSW:

Reflected shock wave of the OSW

RCJ ODW:

Reflected shock wave of the CJ ODW

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Acknowledgments

This work was sponsored by the National Natural Science Foundation of China (No. 91441110).

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Authors and Affiliations

  1. Center for Combustion and Propulsion, SKLTCS, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, 100871, China

    Y. Liu, Y.-S. Liu, D. Wu & J.-P. Wang

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  1. Y. Liu
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  2. Y.-S. Liu
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  3. D. Wu
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  4. J.-P. Wang
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Corresponding author

Correspondence to Y. Liu.

Additional information

Communicated by A. Sasoh and A. Higgins.

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Liu, Y., Liu, YS., Wu, D. et al. Structure of an oblique detonation wave induced by a wedge. Shock Waves 26, 161–168 (2016). https://doi.org/10.1007/s00193-015-0600-5

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  • DOI: https://doi.org/10.1007/s00193-015-0600-5

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