Nonlinear Fluid-Structure Interaction in Large-Scale Offshore Floating Photovoltaics

Efficient and affordable solar energy is essential for reducing greenhouse gas emissions and achieving climate neutrality. Large-scale offshore floating photovoltaics (LOFPV) provide creative opportunities for clean and cost-effective renewable energy production close to populated areas. They are composed of solar modules, a membrane platform,...

Numerical Prediction of Flow Induced Vibrations in Nuclear Reactors through Pressure Fluctuation Modelling

Flow induced vibrations (FIV) is a known problem in nuclear reactors. The interaction between the turbulent flow of the coolants and the fuel rod bundles generates vibrations which are undesirable. These vibrations can be a major cause of fatigue failures, stress corrosion cracking and fretting wear of materials, which lead to stand-still costs....

Reduced - complexity experiment for validating Fluid-Structure Interaction in ComFLOW

Human activities in marine environment are expanding to more remote locations, exposing offshore structures and commercial vessels to more adverse environmental conditions. On the other hand, market has a continuous demand for more cost efficient designs. Therefore, the need for more sophisticated computational tools arises. In these tools, the...

Development of a Coupled Fluid-Structure Simulation Method in the Frequency Domain

In this work a numerical method is developed to efficiently simulate limit cycle oscillations and forced response amplitudes of fluid-structure interaction (FSI) problems. The method computes a solution in the frequency-domain and can therefore only deal with periodic unsteadiness. As flow solver the Harmonic Balance method is used which is...

Numerical Simulation of Bubble and Droplet Dynamics using Partitioned Solvers

Bubbles and droplets can be simulated as a problem involving Fluid-Structure Interaction (FSI). The interface between the liquid and the gas is then conceived as a zero thickness structure. The position of the interface is determined by the equilibrium between surface tension effects and the pressure jump across the interface. Most techniques...

Efficient approaches for fluid structure interaction with fully enclosed incompressible flow domains

Many popular partitioned approaches to fluid-structure interaction (FSI) problems fail to work for an interesting subset of problems if highly deformable structures are interacting with incompressible flows. This is particularly true for coupling approaches based on Dirichlet-Neumann substructuring, both for weak and strong coupling schemes. The...

Cartesian Discretisations for Fluid-Structure Interaction - Efficient Flow Solver

The simulation of multiphysical scenarios has become a more and more important task of scientific computing within the last years. Due to their simplicity compared to monolithic approaches (solving a unique model for the whole scenario), partitioned approaches are widespread. They allow for a reusage of existing and established solvers for the...

Cartesian Discretisations for Fluid-Structure Interaction - Consistent Forces

Hierarchical Cartesian grids such as those defined by spacetrees have proven to be useful in lots of simulation scenarios in spite of their frequently supposed difficulties concerning the approximation of complicated and changing geometries. One of their most important advantages is the simple, efficient and flexible interface they offer. Thus,...