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Computational and Experimental Study of Conjugate Heat Transfer From a Flat Plate With an Impinging Jet

[+] Author Affiliations
Rajesh Kumar Panda, B. V. S. S. S. Prasad

Indian Institute of Technology Madras, Chennai, India

Paper No. GT2010-22572, pp. 213-222; 10 pages
doi:10.1115/GT2010-22572
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 4: Heat Transfer, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4399-4 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

Transient conjugate heat transfer of flat circular disk is investigated with constant heat flux at the bottom surface and with air jet impinging on its top surface. Thermocouple measurements are made at twelve locations to obtain the temperature distribution within the plate. The spacing to orifice diameter ratio (H/d) (1 to 8), and jet Reynolds number (12878 to 25750) are varied. Computations are carried out by using large eddy simulation (LES) with Smagorinsky-Lilly sub grid scale modeling. Excellent agreement is obtained between the computational and the experimental data. The computationally obtained flow structure shows the interaction among the toroidal vortices on the target plate. The conjugate Nusselt number value of thick plate is found to be higher compared to the value for the zero or low thickness plate confirming the Brun number criteria. Among various H/d values, H/d = 2 and 8 are found to give near uniform heat transfer rate throughout the plate.

Copyright © 2010 by ASME

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