Nitsche-XFEM for the Coupling of an Incompressible Fluid with Immersed Thin-Walled Structures
Date:
Seminar Talk at Séminaire d’analyse numérique, Université de Genève, Geneva, Switzerland
Seminar talk on Nitsche-XFEM methods for coupling an incompressible fluid with immersed thin-walled structures. The talk presented an unfitted-mesh approach in which a Lagrangian thin-walled structure cuts through an Eulerian fluid mesh, using extended finite elements to capture discontinuities in the fluid velocity and pressure and Nitsche’s method to impose the interface conditions. It also discussed stabilization for arbitrary interface intersections and the trade-offs between implicit, semi-implicit, and explicit time-splitting of the fluid-solid coupling.
The Nitsche-XFEM formulation presented in this seminar is developed in full in: Computer Methods in Applied Mechanics and Engineering (2016)