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Heat Transfer Characteristics for Jet Array Impingement With Initial Crossflow FREE

[+] Author Affiliations
L. W. Florschuetz, D. E. Metzger, C. C. Su

Arizona State University, Tempe, AZ

Paper No. 83-GT-28, pp. V004T09A001; 10 pages
doi:10.1115/83-GT-28
From:
  • ASME 1983 International Gas Turbine Conference and Exhibit
  • Volume 4: Heat Transfer; Electric Power
  • Phoenix, Arizona, USA, March 27–31, 1983
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7954-2
  • Copyright © 1983 by ASME

abstract

Two-dimensional arrays of circular air jets impinging on a heat transfer surface parallel to the jet orifice plate are considered. The jet flow, after impingement, is constrained to exit in a single direction along the channel formed by the jet orifice plate and the heat transfer surface. In addition to the crossflow which originates from the jets following impingement, an initial crossflow is present which approaches the array through an upstream extension of the channel. The temperature of the initial crossflow air may differ from the jet air temperature. The configurations considered are intended to model the impingement cooled midchord region of gas turbine airfoils in cases where an initial crossflow is also present. Nusselt numbers and dimensionless adiabatic wall temperatures resolved to one streamwise jet hole spacing were experimentally determined for ratios of the initial crossflow rate to the total jet flow rate ranging from zero to unity. These are presented and discussed relative to the flow and geometric parameters.

Copyright © 1983 by ASME
Topics: Heat transfer
This article is only available in the PDF format.

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