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Transport and dynamics of liquid oxygen droplets in supercritical hydrogen streams

Published online by Cambridge University Press:  09 March 2005

H. MENG ,
G. C. HSIAO ,
V. YANG  and
J. S. SHUEN
H. MENG
Affiliation:
Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
G. C. HSIAO
Affiliation:
Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
V. YANG
Affiliation:
Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
J. S. SHUEN
Affiliation:
US Department of Energy, Richland Operations Office, Richland, WA 99352, USA
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Abstract

The transport and dynamics of an isolated liquid oxygen (LOX) droplet in a supercritical hydrogen stream has been numerically studied based on the complete conservation equations in axisymmetric coordinates. The approach employs a unified treatment of general fluid thermodynamics and transport, and accommodates rapid variations of fluid properties in the transcritical regime. Surface tension of the droplet is ignored in consistency with the supercritical thermodynamic condition. The analysis allows for a systematic investigation into droplet behaviour over broad ranges of fluid thermodynamic states and ambient flow conditions. Detailed flow structures and transport phenomena are examined to reveal various key mechanisms underlying droplet vaporization in a supercritical forced convective environment. In addition, correlations of droplet lifetime and drag coefficient are established in terms of fluid properties, pressure, and free-stream Reynolds number.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 527 , 25 March 2005 , pp. 115 - 139
Copyright
© 2005 Cambridge University Press

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