Transport coefficients in thermal plasma. Applications to Mars and Titan atmospheres

Pascal André (1) , Jacques Aubreton (2, 3) , Stéphane Clain (4) , Michel Dudeck (5) , Emmanuel Duffour (1) , Marie-Françoise Elchinger (2, 3) , Boujema Izrar (6) , D. Rochette (1) , Rachid Touzani (7) , Damien Vacher (1)

1 LAEPT - Laboratoire arc électrique et plasmas thermiques
2 Axe 2 : procédés de traitements de surface
3 SPCTS - Science des Procédés Céramiques et de Traitements de Surface
4 IMT - Institut de Mathématiques de Toulouse UMR5219
5 DALEMBERT - Institut Jean Le Rond d'Alembert
6 ICARE - Institut de Combustion, Aérothermique, Réactivité et Environnement
7 LMBP - Laboratoire de Mathématiques Blaise Pascal

This work is a contribution to the calculation of transport coefficients for nitrogen, hydrogen, Mars and Titan atmospheres plasmas. The calculation which assumes local thermodynamic equilibrium is performed using Lennard-Jones potential and simple combining rules for the potential parameters for neutral-neutral interaction. A discussion is made for the other interactions: neutral-charged, charged-charged and electron-neutral. The results are compared with those of published theoretical studies for a temperature up to 30000 K.

Mots clés: Transport coefficients; viscosity; thermal conductivity; electrical conductivity; Chapman-Enskog method; nitrogen; hydrogen; carbon dioxide; Mars; Titan; plasma

Domaines: Physique des plasmas [physics.plasm-ph]; Equations aux dérivées partielles [math.AP]

Pascal André, Jacques Aubreton, Stéphane Clain, Michel Dudeck, Emmanuel Duffour, et al.. Transport coefficients in thermal plasma. Applications to Mars and Titan atmospheres. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2010, 57 (2), pp.227-234. ⟨10.1140/epjd/e2010-00036-5⟩. ⟨hal-00477477⟩