New two-temperature dissociation model for reacting flows

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Journal of Thermophysics and Heat Transfer; (United States)

DOI:https://doi.org/10.2514/3.478· OSTI ID:6979678

Olynick, D P; Hassan, H A ^[1]

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1. North Carolina State Univ., Raleigh, NC (United States)

A new two-temperature dissociation model for the coupled vibration-dissociation process is derived from kinetic theory. It is applied for flows undergoing compression. The model minimizes uncertainties associated with the two-temperature model of Park. The effects of the model on AOTV-type flowfields are examined and compared with the Park model. Calculations are carried out for flows with and without ionization. When considering flows with ionization, a four-temperature model is employed. For Fire II conditions, the assumption of equilibrium between the vibrational and electron-electronic temperatures is somewhat poor. A similar statement holds for the translational and rotational temperatures. These trends are consistent with results obtained using the direct simulation Monte Carlo (DSMC) method. 25 refs.

• OSTI ID: 6979678
• Journal Information: Journal of Thermophysics and Heat Transfer; (United States), Journal Name: Journal of Thermophysics and Heat Transfer; (United States) Vol. 7:4; ISSN 0887-8722; ISSN JTHTEO
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
AERODYNAMICS
CALCULATION METHODS
COMPRESSIBLE FLOW
ENERGY TRANSFER
FLUID FLOW
FLUID MECHANICS
HEAT TRANSFER
MATHEMATICAL MODELS
MECHANICS
MONTE CARLO METHOD
SHOCK WAVES