0
TECHNICAL PAPERS

Computational Fluid Dynamics Modeling of Impinging Gas-Jet Systems: II. Application to an Industrial Cooling System Device

[+] Author and Article Information
M. Coussirat

CDIF, Dpto. Mec. de Fluids,  Universidad Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spaincoussirat@mf.upc.es

J. van Beeck, J.-M. Buchlin

 von Kármán Institute for Fluid Dynamics, Belgium

M. Mestres

Instituto de Ingeniería del Agua y Medio Ambiente,  Universidad Politècnica de Valencia, Spain

E. Egusquiza, C. Valero

CDIF, Dpto. Mec. de Fluids,  Universidad Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain

N-d = nondimensional variable

J. Fluids Eng 127(4), 704-713 (Apr 19, 2005) (10 pages) doi:10.1115/1.1949635 History: Received July 21, 2004; Revised April 19, 2005

A numerical analysis of the flow behavior in industrial cooling systems based on arrays of impinging jets has been performed, using several eddy viscosity models to determine their modeling capabilities. For the cooling system studied, and in terms of mean Nusselt number values, the best agreement between experimental results and numerical predictions was obtained with the realizable kε model. On the other hand, numerical predictions of the local Nusselt number and its spatial variations along the wall are better adjusted to the experiments when using either the standard kε or the standard kω models. The results obtained also show that the predicted thermal field depends strongly on the combination of near-wall treatment and selected turbulence model.

FIGURES IN THIS ARTICLE
<>
Copyright © 2005 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Industrial impinging gas jet system for steel plate cooling

Grahic Jump Location
Figure 2

Characterization and nomenclature of ASN jets for the numerical modeling of the Gardon and Afkirat (7) experiment: B, nozzle width; H, nozzle-to-plate distance; LT, distance between nozzles; and L, nozzle span

Grahic Jump Location
Figure 3

VKI test setup for ASN jets. The setup consists of a 2:3 scale model of the cooling moving strip unit of Fig. 1. Temperature field was measured by means of an infrared IR scanner (from Ref. 8).

Grahic Jump Location
Figure 4

Characterization and nomenclature of ASN jets for the Buchlin (8) experiment: B, nozzle width; H, nozzle-to-plate distance; LT, distance between nozzles; E, nozzle height; L, nozzle span; and us, velocity of the strip

Grahic Jump Location
Figure 5

Streamlines obtained with the standard k−ε for Re=(5.5)×103,H∕B=4.0,B=3.175mm, two nozzles, Gardon and Afkirat (7) case. The nozzle is at the left, and the symmetry edge is at the right.

Grahic Jump Location
Figure 6

Variation of Nusselt number with x distance: Re=(5.5)×103,H∕B=4.0,B=3.175mm, Gardon and Afkirat (7) case. Top, two nozzles; bottom, three nozzles.

Grahic Jump Location
Figure 7

Generated three-dimensional mesh, Buchlin (8) case

Grahic Jump Location
Figure 8

Numerical pathlines obtained with the standard k−ε model for the Buchlin (8) case

Grahic Jump Location
Figure 9

Numerical results for standard k−ε model, Buchlin (8) case. Top, velocity vectors; bottom, μT contours

Grahic Jump Location
Figure 10

Comparison between turbulence models used, Buchlin (8) case

Grahic Jump Location
Figure 11

Comparison between near-wall strategies used, Buchlin (8) case

Tables

Errata

Discussions

Related

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In