Shock wave diffraction about a wedge in a gas-microdroplet mixture

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Shock wave interacts with the droplets as a high-speed flight vehicle penetrates cloud or rain storm in the earth's atmosphere. Interaction of the shock with the gas-droplet two-phase medium significantly affects the aerodynamic performance of the flight vehicle. In the present paper, we investigate the aerodynamic field and wall variables as the moving shock wave diffracts over a wedge in the droplet-gas mixture. We used the compressible two-fluid model equations that have been solved by the HLL-based weighted average flux (WAF) method. The viscous drag force and the heat transfer terms have been included in the model to let the gas and the droplet phases interact. We investigate the effects of the three parameters associated with the microdroplets: the void fraction, the size and the material. We elaborate how the relaxation zone created by the shock wave diffraction is structured and changed in the droplet-gas mixture. (C) 2010 Elsevier Ltd. All rights reserved.
Publisher
Pergamon-Elsevier Science Ltd
Issue Date
2010-11
Language
English
Article Type
Article
Keywords

APPROXIMATE JACOBIAN MATRIX; 2-PHASE FLOW; HLL SCHEME; DUSTY-GAS; DROPLETS; BREAKUP; SIMULATION; DEFORMATION; REFLECTION; TRANSITION

Citation

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.53, no.23-24, pp.5073 - 5088

ISSN
0017-9310
URI
http://hdl.handle.net/10203/96016
Appears in Collection
AE-Journal Papers(저널논문)
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