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International Journal for Multiscale Computational Engineering

ISSN for PRINT: 1543-1649

Institutional price:	$747.00
Issues per year:	6

Best Paper Award Selection - Editorial Board Site

2003, Volume1

187 pages

DOI: 10.1615/IntJMultCompEng.v1.i23

Issue price - $356.00

Efficient Computation of Fluid Drag Forces on Micromachined Devices Using a Boundary Integral Equation-Based Approach

Suvranu De
Scientific Computation Research Center, Rensselaer Polytechnic Institute, Troy, New York, USA

ABSTRACT

In this article, we report several techniques for improving the efficiency and accuracy of a precorrected fast Fourier transform (FFT)-accelerated solver for the computation of fluid drag forces on micromachined devices using a boundary element discretization of the integral form of the incompressible Stokes flow equations. The boundary element formulation necessitates the discretization of the surface of the device using a large number of "panels," whose interactions are coupled by multidimensional Stokes kernels. The resulting "n-body" problem generates dense matrices that can be solved in O(n log n) complexity using a precorrected FFT approach, where n is the number of panels used in discretizing the surface of the device.