Searched for: subject:"Fluid%5C+Structure%5C+Interaction"
(1 - 20 of 114)

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Helsdingen, Martijn (author)
Vertical sliding valves that are part of a filling and emptying system of a lock are often subjected to an underflow of water during emptying and filling. The flow induces time varying forces on the structure which leads to dynamic behaviour of the valve. Whether the structure is in the range of resonance and what the amplitude of the vibrations...
student report 2020
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Greidanus, A.J. (author)
This thesis describes the investigation of the dynamics of turbulent shear flows over non-smooth surfaces. The research was conducted in two parts, related to the experimental facility used in combination with the applied functional surface. The first part describes the experiments of a turbulent Taylor-Couette flow over a...
doctoral thesis 2020
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Çakir, Bora (author)
Closure of Collar's triangle represents a complete framework of fluid-structure interactions (FSI) enabling the comprehensive understanding of different design elements compromising aeronautical applications. Experimental methods such as tomographic particle image velocimetry (Tomo-PIV) are proven to provide accurate acquisition opportunities of...
master thesis 2020
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Krishnan, Navaneetha (author), Viré, A.C. (author), Schmehl, R. (author), van Bussel, G.J.W. (author)
A novel immersed boundary method based on a domain decomposition approach is proposed in the context of a finite element discretisation method. It is applicable to incompressible flows past rigid, deforming, or moving bodies. In this method, unlike most immersed boundary methods, strong boundary conditions are imposed in the regions of the...
journal article 2020
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Boatto, Umberto (author)
Accurate aerodynamic and aeroacoustic simulations of helicopters and wind turbines require the inclusion of the blade elasticity into the computational setup. If low-order aerodynamic models can be efficient for optimization purposes, they are often insufficient in predicting the complex flow phenomena responsible for structural vibrations and...
master thesis 2020
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Bertocchi, F. (author)
Flows in rod bundles are common to many industrial applications such as heat exchangers or some types of nuclear reactors. The core of many classes of nuclear reactors can be easily sketched as a bundle of rods, the fuel pins, inmmersed in an axial ow of coolant that removes the heat produced by the fission reaction. Coupling this geometry to an...
doctoral thesis 2020
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Mitrotta, Francesco (author)
The reduction of atmospheric pollutants emission is one of the biggest challenges of modern aeronautical industry. This is testified by the commitment of international institutions such as the European Commission, with its \textit{Flightpath 2050} document issued in 2011, and by research organization such as NASA, with its \textit{Fixed Wing}...
master thesis 2020
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Maljaars, P.J. (author), Grasso, N. (author), den Besten, J.H. (author), Kaminski, M.L. (author)
The first part of the paper presents a partitioned fluid–structure interaction (FSI) coupling for the non-uniform flow hydro-elastic analysis of highly flexible propellers in cavitating and non-cavitating conditions. The chosen fluid model is a potential flow solved with a boundary element method (BEM). The structural sub-problem has been...
journal article 2020
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Qu, Y. (author), Metrikine, A. (author)
In this study a new wake oscillator model is proposed to describe the coupled cross-flow and in-line vortex-induced vibrations of an elastically supported rigid cylinder. Different from many other studies where two wake oscillators have been applied, the current model uses only one wake oscillator coupled to both cross-flow and in-line motions....
journal article 2020
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Brandsen, J.D. (author), Viré, A.C. (author), Turteltaub, S.R. (author), van Bussel, G.J.W. (author)
Purpose: When simulating fluid-structure interaction (FSI), it is often essential that the no-slip condition is accurately enforced at the wetted boundary of the structure. This paper aims to evaluate the relative strengths and limitations of the penalty and Lagrange multiplier methods, within the context of modelling FSI, through a...
journal article 2020
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Rietema, Roald (author)
Recent decades, an ongoing trend has emerged in the upscaling of wind turbines in order to compete with traditional energy resources. For conventional wind turbines, aside from improving safety, the driving factors for new designs have always been increased efficiency and performance. This has led to novel wind turbine designs comprising thin...
master thesis 2019
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Mathew, Maria (author)
This thesis studies a novel mesh deformation method based on radial basis functions to improve mesh quality in regions with small wall clearances. For fluid-structure interaction problems or imposed motion CFD problems, the usually fixed Eulerian fluid meshes have to undergo deformation to conform to the deforming structure. In such cases, it is...
master thesis 2019
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Heitzig, Dorian (author)
This study investigates the wing deformation of the flapping-wing micro air vehicle (MAV) DelFly II in various flight configurations. Experiments were carried out with the MAV tethered in a windtunnel test section. To determine the best suited measurement approach, a trade-off study was carried out which showed that a point tracking approach...
master thesis 2019
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Lim, Sungsoo (author)
More and more aquaculture structures are installed in open water and further offshore due to the fact that a variety of conflicts have arisen with coastal water, eco-system, and inhabitants who live nearby. They can additionally benefit from a high energy environment, for example, strong currents and waves could disperse fish farm waste. However...
master thesis 2019
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Ibrahim, Ahmed (author)
Heat exchangers of any kind are exposed to thermal loading which have the potential to cause severe stresses on the equipment. The magnitude of these loads are far more pronounced when temperature differences occur. These may be during plant start-up or shut-down due to the transient nature of the temperature profiles or even imbalances that...
master thesis 2019
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Derksen, Adriaan (author)
Recent innovations in the off-shore wind industry have lead to bigger wind turbines and taller support structures. These towers can suffer from vortex-induced vibrations (VIV). The present work couples the open-source CFD solver OpenFOAM with a structural solver to investigate these fluid-structure interactions (FSI) effects in more detail. 2D...
master thesis 2019
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Qu, Y. (author)
Vortex-induced vibration (VIV) is awell-known phenomenon for civil and offshore structures. Currently, the prediction of this type of vibration in practice currently mainly relies on the force-decomposition method. However, the limitations of this method have restricted the applicability of the method, and alternative models are therefore needed...
doctoral thesis 2019
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Nonhebel, Jochem (author)
Natural gas accounts for just under a quarter of global energy demand. The gas is mainly delivered through pipelines, but is increasingly shipped overseas by liquefying it to LNG at -162 degrees Celcius. Fluids, containing free surfaces inside ships are likely to start sloshing, as ships move on waves. These fluids induce impact loading on the...
master thesis 2019
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Maljaars, P.J. (author)
Higher efficiencies, higher cavitation inception speeds and reduced acoustic signature are claimed benefits of flexible composite propellers. Analysing the hydrodynamic performance of these flexible propellers, implies that a coupled fluid-structure interaction (FSI) computation has to be performed. An FSI coupling can be monolithic, which means...
doctoral thesis 2019
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Risseeuw, Derek (author)
Flapping wings display complex flows which can be used to generate large lift forces. Flexibility in wings is widely used by natural flyers to increase the aerodynamic performance. The influence of wing flexibility on the flow can be computed using numerical analysis with Fluid Structure Interaction (FSI). However, there is a lack of open-source...
master thesis 2019
Searched for: subject:"Fluid%5C+Structure%5C+Interaction"
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