Simulation of fluid-structure interaction in micropumps by coupling of two commercial finite element programs

Andreas Klein; Gerald Gerlach

doi:10.1117/12.322086

10 September 1998 Simulation of fluid-structure interaction in micropumps by coupling of two commercial finite element programs

Andreas Klein, Gerald Gerlach

Author Affiliations +

Proceedings Volume 3515, Microfluidic Devices and Systems; (1998) https://doi.org/10.1117/12.322086
Event: Micromachining and Microfabrication, 1998, Santa Clara, CA, United States

Abstract

This paper deals with the simulation of the fluid-structure interaction phenomena in micropumps. The proposed solution approach is based on external coupling of two different solvers, which are considered here as `black boxes'. Therefore, no specific intervention is necessary into the program code, and solvers can be exchanged arbitrarily. For the realization of the external iteration loop, two algorithms are considered: the relaxation-based Gauss-Seidel method and the computationally more extensive Newton method. It is demonstrated in terms of a simplified test case, that for rather weak coupling, the Gauss-Seidel method is sufficient. However, by simply changing the considered fluid from air to water, the two physical domains become strongly coupled, and the Gauss-Seidel method fails to converge in this case. The Newton iteration scheme must be used instead.

Citation Download Citation

Andreas Klein and Gerald Gerlach "Simulation of fluid-structure interaction in micropumps by coupling of two commercial finite element programs", Proc. SPIE 3515, Microfluidic Devices and Systems, (10 September 1998); https://doi.org/10.1117/12.322086

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