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A dynamic study of the warm-up phase of a high-pressure mercury lamp.

Authors :
Araoud, Z.
Ben Ahmed, R.
Bouaoun, M.
Ben El Hadj Rhouma, M.
Charrada, K.
Zissis, G.
Source :
Physics of Plasmas; Sep2008, Vol. 15 Issue 9, p093502, 10p, 1 Color Photograph, 1 Diagram, 1 Chart, 22 Graphs
Publication Year :
2008

Abstract

A time-dependent two-dimensional computational fluid model has been adopted to investigate the dynamic behavior of the high-pressure mercury lamp during the last phase of the warm-up period. The model solves the combined momentum, continuity, energy, and electric field equations for the plasma and the energy equation for the wall. Two models have been compared. The first takes convection into account and is called “convection model.” The second, which neglects this term, is termed “convectionless model.” Good agreement between the predictions and experimental data from literature has been obtained. It is found that the convection affects the lamp performance by increasing the mercury losses behind the electrodes and the mercury-evaporation time. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1070664X
Volume :
15
Issue :
9
Database :
Complementary Index
Journal :
Physics of Plasmas
Publication Type :
Academic Journal
Accession number :
34621655
Full Text :
https://doi.org/10.1063/1.2975212