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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

Individual price:

$246.00 (Must be sent to your home address)

You can order single issue or individual article. To purchase a single issue or an individual article as well as to view tables of contents and abstracts click on issue number.

Institutional price:

$518.00

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For Online Access

Year 2005

• 18th Australasian Heat and Mass Transfer Conference
Curtin University of Technology, Perth, Western Australia, 26-29 July 2005

239 pages

Volume price - $518.00

Heat Transfer Characteristics in Impinging Jet Arrays

A. J. C. King
Department of Mechanical Engineering, Curtin University of Technology, Perth, Australia

ABSTRACT

Impinging jets have often been highlighted as suitable for use in high heat flux micro heat exchangers. For cases where high heat fluxes are present over large areas, arrays of impinging jets are often used. In this paper the array geometry to provide maximum heat transfer is determined by a parametric study on impinging jets arranged in both square and hexagonal arrays. Closely packed jet arrays are numerically modelled for a range of jet to surface distances, jet-to-jet spacings and jet velocities and the optimum configuration determined by comparison of the average surface Nusselt number. Results indicate average heat transfer increases as spacing between jets decreases up to a critical distance at which heat transfer is significantly reduced. The flow characteristics affecting this critical distance are examined.