Development of a near-wall turbulence model and application to jet impingement heat transfer

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A near-wall turbulence model was developed and applied to heat and fluid flows for an impinging jet flow. The k-epsilon -f(mu) model was modified for predictions in strongly strained turbulent flows. To derive a realizable eddy viscosity, the f(mu)2 function was newly formulated. The near-wall effect and the anisotropic production were reflected in the epsilon -equation. The model performance was validated by the relevant experimental data. The predicted results were compared with those by the k-epsilon model and by the k-epsilon-nu (2) model. The application to jet impingement heat transfer revealed that the present numerical predictions of wall heat transfer show good agreement with the experimental data in the stagnation region. The influence of the Reynolds number on the stagnation Nusselt number was investigated. The model performance was shown to be generally satisfactory. (C) 2001 Elsevier Science Inc. All rights reserved.
Publisher
ELSEVIER SCIENCE INC
Issue Date
2001-02
Language
English
Article Type
Article
Keywords

DIRECT NUMERICAL-SIMULATION; K-EPSILON MODEL; IMPINGING JET; CHANNEL FLOW; FIELD

Citation

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, v.22, no.1, pp.10 - 18

ISSN
0142-727X
URI
http://hdl.handle.net/10203/10490
Appears in Collection
ME-Journal Papers(저널논문)
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