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On the Mechanism of Energy Transfer in the Plasma‐Propellant Interaction
Author(s) -
Porwitzky Andrew J.,
Keidar Michael,
Boyd Iain D.
Publication year - 2007
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.200700042
Subject(s) - propellant , plasma , heat flux , convection , flux (metallurgy) , ablation , mechanics , atomic physics , heat transfer , materials science , convective heat transfer , thermodynamics , chemistry , physics , aerospace engineering , nuclear physics , organic chemistry , engineering , metallurgy
A coupled plasma sheath/ablation model is developed for electrothermal chemical gun applications. By combining a commonly employed collisional sheath model with a previous ablation model, the convective heat flux as a function of time to the propellant bed is determined for two potential electrothermal chemical gun propellants, XM39 and JA2. It is found that the convective heat flux varies smoothly from a nearly collisionless to a fully collisional regime over the short duration of the plasma pulse. The possibility of determining an accurate estimate of the amount of heat flux to the propellant bed due to radiation from the bulk plasma presents itself.
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