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Finite element high performance computing of turbulent flow and fluid-structure interaction

Johann Hoffman


We present finite element methods for modeling turbulent flow and fluid-structure interaction, including high performance computing implementation in the open source software FEniCS-HPC [1]. Fluid-structure interaction is formulated in a Unified Continuum framework [2], including contact modeling. Turbulent fluid flow is modeled by G2 implicit large eddy simulation with residual based stabilization modeling the effect of subgrid scales, with skin friction boundary conditions modeling turbulent boundary layers. Examples are presented, including applications to aerodynamics of aircraft and vehicles, simulation of blood flow in the human heart, and human voice production including colliding vocal folds interacting with turbulent airflow.

[1] J.Hoffman, J.Jansson and M.St\366ckli, Unified continuum modeling of fluid-structure interaction, Mathematical Models and Methods in Applied Sciences, Vol.21(3), pp.491-513, 2011.

[2] J.Hoffman, J.Jansson, R.Vilela de Abreu, C.Degirmenci, N.Jansson, K.Meuller, M.Nazarov and J.Hiromi Speuhler, Unicorn: parallel adaptive finite element simulation of turbulent flow and fluid-structure interaction for deforming domains and complex geometry, Computer and Fluids, in press.

Thursday, February 28, 2013
11:00AM AP&M 2402