IRTG Modern Inverse Problems (MIP)
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SSD Seminar Series with Dr. Michel Make

13. Dezember 2021 @ 16:00 - 17:00

Dr. Michel Make – Spline-Based Methods for Fluid-Structure Interaction

Simulation Data Lab Fluids, RWTH Aachen University


Non-Uniform Rational B-Spline (NURBS) surfaces are commonly used within Computer-Aided Design
(CAD) tools to represent geometric objects. When using isogeometric analysis (IGA), it is possible to use such NURBS geometries for numerical analysis directly. Analyzing fluid flows, however, requires complex three-dimensional geometries to represent flow domains. Defining a parametrization of such volumetric domains using NURBS can be challenging and is still an ongoing topic in the IGA community.

With the recently developed NURBS-enhanced finite element method (NEFEM), the favorable geometric characteristics of NURBS are used within a standard finite element method. This is achieved by enhancing the elements touching the boundary by using the NURBS geometry itself. In this talk, a new variation of NEFEM is introduced, which is suitable for three-dimensional space-time finite element formulations. The proposed method makes use of a new mapping which results in a non-Cartesian formulation suitable for fluid- structure interaction (FSI).

The method is combined with an IGA formulation in a strongly-coupled partitioned framework for solving FSI problems. The framework yields a fully spline-based representation of the fluid-structure interface through a single NURBS.



13. Dezember 2021
16:00 - 17:00


a link for the Zoom meeting room will be send in the newsletter one week before the seminar starts. If you need any organizational help please contact office@aices.rwth-aachen.de