Flow patterns and transport in Rayleigh surface acoustic wave streaming: combined finite element method and raytracing numerics versus experiments.
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.
Frommelt
Thomas
T
Universität Augsburg, Institut für Physik, Augsburg, Germany. thomas.frommelt@physik.uni-augsburg.de
Gogel
Daniel
D
Kostur
Marcin
M
Talkner
Peter
P
Hänggi
Peter
P
Wixforth
Achim
A
D000162:Acoustics; D000465:Algorithms; D003198:Computer Simulation; D020342:Finite Element Analysis; D044085:Microfluidics / Q000379:methods*; D008962:Models, Theoretical; D013018:Sound Spectrography / Q000379:methods*; D013499:Surface Properties