Header menu link for other important links
X
Natural convection from a heated elliptic cylinder with a different axis ratio in a square enclosure
Published in
2012
Volume: 62
   
Issue: 8
Pages: 639 - 658
Abstract
A detailed study about the free convection over a heated elliptic cylinder, placed at the center of a square cavity having cooled walls, is performed. Simulations are carried out for three Rayleigh numbers (10 4, 10 5, and 10 6) and two cavity aspect ratios (CR=2.5 and 5.0) for different axis ratio (AR). The effect of AR on fluid flow and heat transfer characteristics for varying Rayleigh number and cavity aspect ratio are analyzed. The influence of AR is phenomenal at higher Ra and lower CR. At higher Ra, thermal plumes are observed above the cylinder for different ARs. Bicellular vortices are formed at low Ra by changing CR. The surface-averaged Nusselt number (Nu avg) increases with increasing AR and Ra. The value of Nu avg increases with decreasing CR, and a correlation for Nu avg in terms of AR is obtained for each CR. © 2012 Copyright Taylor and Francis Group, LLC.
About the journal
JournalNumerical Heat Transfer; Part A: Applications
ISSN10407782
Open AccessNo
Concepts (12)
  •  related image
    AXIS RATIO
  •  related image
    CAVITY ASPECT RATIO
  •  related image
    ELLIPTIC CYLINDER
  •  related image
    Flow and heat transfer
  •  related image
    Rayleigh number
  •  related image
    Square cavity
  •  related image
    SQUARE ENCLOSURES
  •  related image
    TWO-CAVITY
  •  related image
    Aspect ratio
  •  related image
    Natural convection
  •  related image
    Nusselt number
  •  related image
    Cylinders (shapes)