Heat Transfer to a Composite Material Under Ice Particle Impacts

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This paper examines what would happen if a supersonic vehicle Dies through an atmosphere laden with ice particles. In previous research of the present authors, an experiment was performed to determine the characteristics of ice-particle impact phenomenon. Therein, the mass loss from the vehicle's surface material by the impacts was measured and the fragments' behavior was studied. In the present work, the trajectories of fragments from the stagnation region were calculated at the experimental conditions. It was surmised that the flow in the stagnation region is turbulent. Turbulent flow increases the heat transfer rate to the surface, and consequently the mass loss increases. To determine the extent of heat transfer rate increase, the new turbulence model, tentatively named crater-induced turbulence model, was proposed. Therein, an assumption was introduced that the turbulent mixing length is proportional to the depth of the impact craters. The constant of proportionality was determined from the existing experimental data taken in wind-tunnel tests. It is shown that heat transfer rate may increase up to 14 times that without ice-particle impacts.
Publisher
AMER INST AERONAUT ASTRONAUT
Issue Date
2010
Language
English
Article Type
Article; Proceedings Paper
Keywords

ENVIRONMENTS

Citation

JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER, v.24, no.3, pp.566 - 572

ISSN
0887-8722
URI
http://hdl.handle.net/10203/99821
Appears in Collection
AE-Journal Papers(저널논문)
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