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Estimating the Effects of Interface Disorder on the Thermal Boundary Resistance Using a Virtual Crystal Approximation

[+] Author Affiliations
Thomas Beechem, Samuel Graham

Georgia Institute of Technology

Paper No. IMECE2006-14161, pp. 171-178; 8 pages
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 3
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4786-1 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME


An analytical method is presented to estimate the effects of structural disorder on the thermal boundary resistance (TBR) between 2 materials. The current method is an extension of the diffuse mismatch model (DMM) where the interface is modeled as a virtual crystal of finite thickness with properties derived from those of the constituent materials. Using this virtual crystal extension, the predictive capabilities of the diffuse mismatch method are greatly increased with added insight into the sensitivity of materials to interface quality.

Copyright © 2006 by ASME



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