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Natural Patterns Applied to the Design of Microchannel Heat Sinks

[+] Author Affiliations
Carlos Alberto Rubio-Jimenez, Abel Hernandez-Guerrero, Jose Cuauhtemoc Rubio-Arana

Universidad de Guanajuato, Salamanca, GTO, México

Satish Kandlikar

Rochester Institute of Technology, Rochester, NY

Paper No. IMECE2009-12047, pp. 1391-1398; 8 pages
doi:10.1115/IMECE2009-12047
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4382-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

The present work shows a study developed of the thermal and hydrodynamic behaviors present in microchannel heat sinks formed by non-conventional arrangements. These arrangements are based on patterns that nature presents. There are two postulates that model natural forms in a mathematical way: the Allometric Law and the Biomimetic Tendency. Both theories have been applied in the last few years in different fields of science and technology. Using both theories, six models were analyzed (there are three cases proposed and both theories are applied to each case). Microchannel heat sinks with split channels are obtained as a result of applying these theories. Water is the cooling fluid of the system. The inlet hydraulic diameter is kept in each model in order to have a reference for comparison. The Reynolds number inside the heat sink remains below the transition Reynolds number value published by several researchers for this channel dimensions. The inlet Reynolds number of the fluid at the channel inlet is the same for each model. A heat flux is supplied to the bottom wall of the heat sink. The magnitude of this heat flux is 150 W/cm2 . The temperature fields and velocity profiles are obtained for each case and compared.

Copyright © 2009 by ASME

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