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Forced Convection Analysis in a Vertical Square Cavity With a Vortex Promoter

[+] Author Affiliations
Enrique A. Damian-Ascencio, Abel Hernandez-Guerrero, Cuauhtemoc Rubio-Arana

University of Guanajuato, Salamanca, GUA, México

Gregory Kowalski

Northeastern University, Boston, MA

Paper No. IMECE2010-38725, pp. 705-710; 6 pages
doi:10.1115/IMECE2010-38725
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4429-8
  • Copyright © 2010 by ASME

abstract

This paper presents a 2-D numerical study of the effect on the heat transfer from a promoter of turbulence in a vertical square cavity. The transient, turbulent flow simulation is for a fluid with a Prandtl number of 0.7 and constant properties. The thermal boundary conditions considered are isothermal cavity walls. In the analysis various aspect ratios and blockage fractions (10%, 25% and 50%) were examined at a constant Reynolds number (Re = 5000). The governing equations are solved using the LES (Large Eddy Simulation) method. The results demonstrate that increasing the channel blockage makes it more difficult to generate turbulence but increases the channel residence time of the fluid.

Copyright © 2010 by ASME

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