title: Flow patterns and transport in Rayleigh surface acoustic wave streaming: combined finite element method and raytracing numerics versus experiments.
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.
authors.affiliation: Universität Augsburg, Institut für Physik, Augsburg, Germany. thomas.frommelt@physik.uni-augsburg.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Frommelt
authors.forename: Daniel
authors.initials: D
authors.lastname: Gogel
authors.forename: Marcin
authors.initials: M
authors.lastname: Kostur
authors.forename: Peter
authors.initials: P
authors.lastname: Talkner
authors.forename: Peter
authors.initials: P
authors.lastname: Hänggi
authors.forename: Achim
authors.initials: A
authors.lastname: Wixforth
mesh_terms: 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