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Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
Published on: August 27, 2013
Flow patterns and transport in Rayleigh surface acoustic wave streaming: combined finite element method and
Thomas Frommelt1, Daniel Gogel, Marcin Kostur
1Universität Augsburg, Institut für Physik, Augsburg, Germany. thomas.frommelt@physik.uni-augsburg.de
Abstract:
This work presents an approach for determining the streaming patterns that are generated by Rayleigh surface acoustic waves in arbitrary 3-D geometries by finite element method (FEM) simulations. An efficient raytracing algorithm is applied on the acoustic subproblem to avoid the unbearable memory demands and computational time of a conventional FEM acoustics simulation in 3-D. The acoustic streaming interaction is modeled by a body force term in the Stokes equation. In comparisons between experiments and simulated flow patterns, we demonstrate the quality of the proposed technique.
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