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High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes)

An International Journal

ISSN for PRINT: 1093-3611

Institutional price:	$604.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2005, Volume9

174 pages

DOI: 10.1615/HighTempMatProc.v9.i4

Issue price - $144.00

PLASMA HEAT TRANSFER: INVERSE METHODS FOR OPTIMIZING THE MEASUREMENTS

J. J. Gonzalez
Laboratoire Plasma et Conversion d'Energie, UMR UPS-INP-CNRS5213, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse cedex 9, France

P. Freton
Laboratoire Plasma et Conversion d'Energie, UMR UPS-INP-CNRS5213, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse cedex 9, France

M. Masquere
AEPPT Team, LAPLACE, UMR CNRS5213, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse III, Cedex 09, France

X. Franceries
CPAT, UMR 5002 du CNRS, Universite Paul Sabatier, 118 route de Narbonne, 31062 TOULOUSE cedex 4, France

F. Lago
CPAT, UMR 5002 du CNRS, Universite Paul Sabatier, 118 route de Narbonne, 31062 TOULOUSE cedex, France

ABSTRACT

In the literature, a lot of works deal with plasma characteristics measurements, nevertheless only few of them are related to the plasma interaction and to the heat transfer with the anode materials. This point can be investigated by experimental and/or theoretical ways. The determination of the temperature field in the anode material and the heat flux applied by the plasma to its surface, necessitate to develop and to solve an inverse problem. This method consists to obtain, through the measurement of some punctual temperatures by thermocouples, the total field of the temperature in the material and the flux applied to its surface. As it is a complex problem, we decide in a first time, for the model validation, to use a theoretical approach. Some punctual values are so taken from the anode temperature field and we present some inverse methods with their advantages and inconveniences (Tikhonov regularization, conjugate gradient…). The minimum number of thermocouples, needed to obtain good information, is discussed following their positions. Finally the parametric study is used for optimizing the experimental configuration measurements and the results presented.