Comparison of vibration dissociation coupling and radiative heat transfer models for AOTV/AFE flowfieldsA series of detailed studies comparing various vibration dissociation coupling models, reaction systems and rates, and radiative heating models has been conducted for the nonequilibrium stagnation region of an AFE/AOTV vehicle. Atomic and molecular nonequilibrium radiation correction factors have been developed and applied to various absorption coefficient step models, and a modified vibration dissociation coupling model has been shown to yield good vibration/electronic temperature and concentration profiles. While results indicate sensitivity to the choice of vibration dissociation coupling model and to the nitrogen electron impact ionization rate, by proper combinations accurate flowfield and radiative heating results can be obtained. These results indicate that nonequilibrium effects significantly affect the flowfield and the radiative heat transfer. However, additional work is needed in ionization chemistry and absorption coefficient modeling.
Document ID
19880056514
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Carlson, Leland A. (Texas A&M Univ. College Station, TX, United States)
Bobskill, Glenn J. (Texas A&M Univ. College Station, TX, United States)
Greendyke, Robert B. (Texas A & M University College Station, United States)