7.05 Coupling strategies for Isogeometric multiphysics analysis and optimization

Research

The project will develop new surface coupling schemes for computational staggered multi-field simulation and optimization of structures which are characterized by highest demands for the quality of the geometrical surface resolution. As a typical field of application the project will concentrate on fluid-structure-interaction (FSI) simulation of flexible, free-form shell and membrane structures, e.g. rotating wind turbine blades, flexible tent-like structures such as wide span stadium roofs subjected to wind or technical and natural tissues subjected to fluids etc. The physical modelling and the significance of the simulation results for such problems are dominated by the quality of the surface resolution, e.g. to precisely determine separation points of streamlines on the structure. High quality modelling of surface geometries and on this basis modelling of physical exchange mechanisms is decisive. The framework of isogeometric analysis (IGA) already proved in principle the qualitative superiority of merging CAGD and FEM-techniques by completely avoiding geometric discretization errors, typically for simple field problems.

Publications

Markus, D. et al.: "A Virtual Free Surface (VFS) model for efficient wave-current CFD simulation of fully submerged structures", Coastal Engineering, 2014.

Markus, D., et al.: "Lift Force Optimization of Gravity Base Offshore Foundations Using CFD",Proceedings of the 24th International Offshore and Polar Engineering Conference, 2014.

Markus, D., et al.: "A numerical investigation of combined wave-current loads on tidal stream generators", Ocean Engineering, 2013.

Markus, D., et al.: "A Reduced Modeling Methodology for Efficient Ocean Wave CFD Simulation of Fully Submerged Structures",Proceedings of the 32nd International Conference on Ocean, Offshore and Arctic Engineering, 2013.

Markus, D., et al.: "Optimal Shape Design of Offshore Foundations Subjected to Wave and Current Loading",Proceedings of the 10th European Wave and Tidal Energy Conference, 2013.

Markus, D., et al.: "A CFD approach to modeling wave-current interaction",International Journal of Offshore and Polar Engineering, 2013.

Markus, D., et al.: "A Numerical Wave Channel for the Design of Offshore Structures with Consideration of Wave-Current Interaction",Proceedings of the 22nd International Offshore and Polar Engineering Conference, 2012.

Markus, D., et al.: "Gründungen von Meeresströmungskraftwerken - Herausforderungen und Maßnahmen zur numerischen Simulation und Optimierung von umströmten Schwergewichtsfundamenten", Dresdner Wasserbauliche Mitteilungen Heft 45, 2011.

Team

Project team leader

PD Dr.-Ing. habil. Roland Wüchner
TUM Department of Civil, Geo and Environmental Engineering

Alumnus

Dr.-Ing. Daniel Markus
Chair of Structural Analysis

Alumnus

Dr.-Ing. Robert Schmidt
Chair of Structural Analysis

Principal investigator

Professor Kai-Uwe Bletzinger 
Chair of Structural Analysis

Principal investigator

Professor Yuri Bazilevs
Institute of Medicine in Engineering | UC San Diego