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A Model of Shear Viscosity for Under-Fill Flows

[+] Author Affiliations
R. Yang

Spirent Communication, Inc.

D. C. Sun, Seungbae Park

State University of New York at Binghamton

Paper No. IMECE2005-82872, pp. 199-208; 10 pages
doi:10.1115/IMECE2005-82872
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Electronic and Photonic Packaging, Electrical Systems Design and Photonics, and Nanotechnology
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Electronic and Photonic Packaging Division
  • ISBN: 0-7918-4217-7 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

The flow of a dense slurry between two parallel walls is modeled in this paper. The flow behavior of the dense slurry is governed by the particle-particle and particle-wall interactions. Fluid film lubrication theory is used to find the unit solutions of interaction between two particles. The unit solutions are applied to a simple case of slurry flow densely packed with neutrally buoyant particles. The dependence of the effective viscosity of the slurry on packing parameters is revealed. The shear viscosity so obtained is intended for use in the analysis of under-fill flows of encapsulant induced by surface tension. An ongoing under-fill flow experiment aimed at validating the shear viscosity model is described.

Copyright © 2005 by ASME

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