Gas puff nozzle characterization using interferometric methods and numerical simulation

Author

Barnier, J.-N. ; Chevalier, J.-M. ; Dubroca, B.D. ; Rouch, J.

Author_Institution

Centre d´´Etudes Sci. et Techniques d´´Aquitaine, CEA, Le Barp, France

Volume

26

Issue

4

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

1094

Lastpage

1100

Abstract

One of the source terms of Z-pinch experiments is the gas puff density profile. In order to characterize the gas puff, we have used two interferometrical methods and performed some numerical simulations. The merits of both optical techniques are presented in terms of sensitivity, accuracy, and full time recording. Hence, one technique has been chosen to characterize the gas puff. The computation fluid dynamics (CFD) code (ARES) has been used to simulate the gas flow with the aim of testing its performances. Comparing experimental and numerical data shows off the taking into account of gas viscosity in computations. Given these consistent results, the nozzle geometries can be optimized in order to obtain specific Z-pinch gas puffs and check the computation with the interferometric method. Results obtained with a cylindrical nozzle are presented herein

Keywords

Z pinch; light interferometry; nozzles; plasma diagnostics; plasma flow; plasma simulation; ARES; Z-pinch experiments; computation fluid dynamics code; cylindrical nozzle; full time recording; gas flow; gas puff density profile; gas puff nozzle characterization; gas viscosity; interferometric method; interferometric methods; nozzle geometries; numerical simulation; optical techniques; Computational fluid dynamics; Computational modeling; Fluid dynamics; Fluid flow; Numerical simulation; Optical interferometry; Optical recording; Optical sensors; Performance evaluation; Testing;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.725137

Filename

725137