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Experimental Validation of Macro-Models for Simulating Capillary Driven Multiphase Flows Used for Micro-Chamber Filling

[+] Author Affiliations
Debjyoti Banerjee

Texas A&M University, College Station, TX

Paper No. IPACK2005-73412, pp. 2017-2021; 5 pages
  • ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference
  • Advances in Electronic Packaging, Parts A, B, and C
  • San Francisco, California, USA, July 17–22, 2005
  • Conference Sponsors: Heat Transfer Division and Electronic and Photonic Packaging Division
  • ISBN: 0-7918-4200-2 | eISBN: 0-7918-3762-9
  • Copyright © 2005 by ASME


Macro-models (also called “reduced-order-models”, “lumped parameter models”, etc.) are convenient and efficient design tools that afford reasonable simulation accuracy by replacing the governing physical equations with behavioral models. Such models are easy to implement, usually do not require grid formulations, employ simple numerical schemes (systems of ordinary differential equations or algebraic equations), and have robust numerical convergence. In this study macro-models were developed for predicting the filling of micro-chambers for capillary driven flows as a function of geometric parameters and fluid properties (viscosity, surface tension and contact angle). It was found that bubble formation in filling of micro-chambers is a strong function of wall contact angles. A region of wall influence parameter was identified which was found to be relatively insensitive to flow parameters (flow rate, viscosity, etc.) and depends strongly on the wettability of the side walls of the micro-chambers.

Copyright © 2005 by ASME



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