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Thermodynamic and Transport Properties for Induction Plasma Modeling

Sarma, G.S.R. and Bottin, B. and Van den Abeele, D. and Carbonaro, M. and Degrez, G. (1998) Thermodynamic and Transport Properties for Induction Plasma Modeling. In: AIAA Thermodynamics Conference. AIAA Thermophysics Conference, Albuquerque, NM/USA, 15.-19. Juni 1998.

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Abstract

The development at the von Karman Institute of an inductively heated plasma wind tunnel has brought a need for theoretical and numerical investigation of high-temperature gases (plasmas) of different types. The thermodynamic properties of individual species are computed using statistical thermodynamics formulations based on the rigid rotator and harmonic oscillator model. A discussion is made about cut-off criteria for the electronic levels, low-temperature corrections to the partition function and anharmonicity considerations. It is shown that sufficient accuracy is obtained for practical applications of chemical equilibrium without complex cut-off criteria and anharmonicity corrections. The mixture thermodynamic properties are computed at chemical equilibrium reactions approach. An efficient formulation has been obtained for mole fraction or mass fraction computation which allows the reduction of the system of unknowns to a size equal to the number of basic nuclei types. The method is illustrated by 3-species argon and 13-species air plasma computations. Finally, transport properties are computed from kinetic theory of gases. The underlying mixture rules and the collisional data used is input are discussed and results are shown for a 13-species air plasma.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1998,
Title:Thermodynamic and Transport Properties for Induction Plasma Modeling
Authors:
AuthorsInstitution or Email of Authors
Sarma, G.S.R.UNSPECIFIED
Bottin, B.VKI
Van den Abeele, D.VKI
Carbonaro, M.VKI
Degrez, G.VKI
Date:1998
Journal or Publication Title:AIAA Thermodynamics Conference
Series Name:AIAA-98-2938
Status:Published
Keywords:Computational fluid dynamics, physico-chemical modelling, plasmatron, ionized flow, thermodynamic and transport properties
Event Title:AIAA Thermophysics Conference, Albuquerque, NM/USA, 15.-19. Juni 1998
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Theoretische Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:36

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