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Thermal Anisotropy in Injection Molded Polymer Composite Fins

[+] Author Affiliations
Avram Bar-Cohen, Patrick Luckow, Juan G. Cevallos, S. K. Gupta

University of Maryland, College Park, MD

Paper No. IHTC14-23308, pp. 405-416; 12 pages
doi:10.1115/IHTC14-23308
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 3
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4938-5 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

An integrated molding-heat transfer modeling methodology is used to study the thermal characteristics of polymer composite fins subjected to convective heat transfer coefficients. Numerical predictions of the fiber orientation in a representative, injection-molded plate fin, based on the Folgar-Tucker model, are used, via the classic Nielsen model, to determine the anisotropic variation of thermal conductivity in the fin. Thermal simulations are then performed to determine the effect of both global and local thermal anisotropy on the temperature distribution and heat transfer rate of the anisotropic fin. It is also shown that the harmonic mean conductivity, in the axial direction, can be used to represent the heat loss of an anisotropic fin to better than 10% accuracy.

Copyright © 2010 by ASME

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