Investigation of Heat Transfer Enhancement Through Permeable Fins
Heat transfer through rectangular permeable fins is modeled and analyzed theoretically in this work. The free stream fluid flow is considered to be normal to the upper surface of the permeable fin. Th...
Heat transfer through rectangular permeable fins is modeled and analyzed theoretically in this work. The free stream fluid flow is considered to be normal to the upper surface of the permeable fin. Th...
Heat Transfer Characterization of Two Isothermal Circular Cylinders in Proximity
J. Heat Transfer -- March 2010 -- Volume 132, Issue 3, 034504 (4 pages)
doi:10.1115/1.4000058
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Heat transfer on two nearby isothermal circular cylinders of equal diameter immersed in a uniform crossflow at Re=120 and Pr=0.7 was numerically studied. We consider all possible arrangements of the two cylinders in terms of the distance between the two cylinders and the inclination angle with respect to the direction of the main flow. It turns out that significant changes in the characteristics of heat transfer are noticed depending on how they are positioned, resulting in quantitative changes in heat transfer coefficients of both cylinders. Collecting all of the numerical results obtained, we propose a contour diagram for averaged Nusselt number for each of the two cylinders. The geometrical symmetry implied in the flow configuration allows one to use those diagrams to estimate heat transfer rates on two isothermal circular cylinders of equal diameter arbitrarily positioned in physical space with respect to the main flow direction.
©2010 American Society of Mechanical Engineers
| History: | Received 5 May 2009; revised 23 July 2009; published 29 December 2009 | |
| doi: | http://dx.doi.org/10.1115/1.4000058 | |
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