On the use of a low-Reynolds extension to the Chen-Kim (k-epsilon) model to predict thermal exchanges in the case of an impinging plasma jet

Citation
R. Bolot et al., On the use of a low-Reynolds extension to the Chen-Kim (k-epsilon) model to predict thermal exchanges in the case of an impinging plasma jet, INT J HEAT, 44(6), 2001, pp. 1095-1106
Citations number
37
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN journal
0017-9310 → ACNP
Volume
44
Issue
6
Year of publication
2001
Pages
1095 - 1106
Database
ISI
SICI code
0017-9310(200103)44:6<1095:OTUOAL>2.0.ZU;2-2
Abstract
The present paper is devoted to the modeling of an impinging argon/hydrogen plasma jet under atmospheric plasma spraying conditions. A two-layer exten sion to the Chen-Kim (k-epsilon) turbulence model was implemented in the Ph oenics code, allowing the prediction of temperature and velocity fields in the turbulent jet and the description of the viscous sublayer at the surfac e of the front body. The predictions of thermal exchanges are compared to r esults obtained with a heuristic formula deduced from experiments and taken from the literature. A comparison is also made with results obtained with some other models and the results indicate that the present proposed model is by far the most accurate. (C) 2001 Elsevier Science Ltd. All rights rese rved.