Dissipation of shock wave in a gas-droplet mixture by droplet fragmentation

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In this paper, we investigate the shock wave dissipation in a gas-droplet mixture over a wedge. A similar gas-droplet mixture had been considered earlier but this time we take account of breakup of the large droplets and see how the shock wave is affected. We consider a droplet breakup model dependent on the critical Weber number and add the equation of droplet number density evolution to the compressible two-fluid model. The viscous drag force, the heat transfer, and the phase change of the droplets are all included in the present model for interaction between phases. The fractional step method is used to solve the two-fluid governing equations in two parts: the hyperbolic operator is solved by the second-order WAF-HLL scheme and the source operator by the fourth-order Runge-Kutta method. We elaborate how the shock dissipation and pressure distribution is affected by the droplet size and droplet volume fraction. (C) 2011 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2012-01
Language
English
Article Type
Article
Keywords

APPROXIMATE JACOBIAN MATRIX; HLL SCHEME; MULTIPHASE FLOWS; 2-PHASE FLOWS; DUSTY-GAS; BREAKUP; VELOCITY; DEFORMATION; SIMULATION; REFLECTION

Citation

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.55, no.4, pp.941 - 957

ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2011.10.015
URI
http://hdl.handle.net/10203/99906
Appears in Collection
AE-Journal Papers(저널논문)
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