Electron thermochemical nonequilibrium effects in re-entry boundary layers

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Results of calculated nonequilibrium electron temperature and concentration characteristics in boundary layers are presented for re-entry conditions: U = 27,500-34,000 fps and altitude 110,000-150,000 ft. These results show the effects of reactions, collisions, electrical current, and electron reflection on the electron heat transfer and temperature. The electron conservation equations in boundary-layer form were solved in the quasi-neutral region with collisionless sheath boundary conditions or approximate boundary conditions derived from the collisionless sheath expressions and valid with collisions in the sheath. A numerical solution was obtained by a finite difference technique after a similarity transformation arid quasilinearization of the equations. The solutions show significant temperature nonequilibrium. Electron current and reflection, combined into a single parameter, reduces electron temperature and increases conduction of energy but does not explicitly affect electron concentration or diffusion of ionization energy.

Original languageEnglish (US)
Pages (from-to)193-199
Number of pages7
JournalAIAA journal
Issue number2
StatePublished - Feb 1971
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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