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Recommended Collision Integrals for Transport Property Computations Part 2: Mars and Venus Entries.
- Source :
-
AIAA Journal . Jan2007, Vol. 45 Issue 1, p281-281. 1p. - Publication Year :
- 2007
-
Abstract
- A review of the best-available data for calculating a complete set of binary collision integrals for the computation of the mixture transport properties (viscosity, thermal conductivity, ordinary and thermal diffusion) of 17-species weakly ionized CO2-N2 mixtures is presented. The fidelity of the data varies considerably, but most of the atom-atom interactions are derived from a b initio methods that are estimated to be accurate to within 5%. The remaining important interactions between neutral species are estimated to be accurate to within about 30% over the temperature range of interest (300-20,000 K) to Mars and Venus reentry plasmas. Collision integrals for important ion-neutral interactions are computed using a modified Tang-Toennies potential and have an estimated accuracy of ±25%, whereas those between trace species are approximated via the polarization (Langevin) potential model. The accuracy and valid temperature range for electron-neutral interactions vary considerably due to scarcity of the required cross section data. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00011452
- Volume :
- 45
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- AIAA Journal
- Publication Type :
- Academic Journal
- Accession number :
- 23781439
- Full Text :
- https://doi.org/10.2514/1.24523