Searched for: subject%3A%22Boundary%255C%2Belement%255C%2Bmethod%22
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Koshakji, Anwar (author), Chomette, Grégoire (author), Turner, Jeffrey (author), Jablonski, Jonathan (author), Haynes, Aisha (author), Carlucci, Donald (author), Giovanardi, Bianca (author), Radovitzky, Raúl A. (author)
The dynamic response of flexible filaments immersed in viscous fluids is important in cell mechanics, as well as other biological and industrial processes. In this paper, we propose a parallel computational framework to simulate the fluid-structure interactions in large assemblies of highly-flexible filaments immersed in a viscous fluid. We...
journal article 2023
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Hoonhout, Daniel (author)
In this thesis we revisit theoretical background for space­time boundary element methods for the heat equation and its implementation. We restrict ourselves to solving the one­, and two dimensional Dirichlet heat equation. A new approach is proposed to approximate the Galerkin matrix entries in a semianalytical fashion, requiring a reduced order...
master thesis 2021
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Mascini, Merlijn (author)
Eddy currents are currents which are induced in a conducting object by a varying magnetic field. These currents generate a magnetic field of their own. Modelling this phenomenon constitutes a diverse and challenging set of problems, for which many applications exist. One such application is the degaussing system of a naval ship. To guarantee...
master thesis 2021
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van Dongen, Lotte (author)
Because the demand for green energy increases rapidly, it is expected that solar and wind energy will dominate future power generation. New in this field is the development of offshore floating solar systems, consisting of multiple interconnected platforms that are covered with PV panels. Besides satisfying the demand for electricity, these...
master thesis 2021
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Peng, Y. (author), Tsouvalas, A. (author), Stampoultzoglou, Tasos (author), Metrikine, A. (author)
Underwater noise pollution generated by offshore pile driving has raised serious concerns over the ecological impact on marine life. To comply with the strict governmental regulations on the threshold levels of underwater noise, bubble curtains are usually applied in practice. This paper examines the effectiveness of an air bubble curtain...
journal article 2021
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Claeys, Xavier (author), Giacometti, Lorenzo (author), Hiptmair, Ralf (author), Urzúa-Torres, Carolina (author)
A complex screen is an arrangement of panels that may not be even locally orientable because of junction lines. A comprehensive trace space framework for first-kind variational boundary integral equations on complex screens has been established in Claeys and Hiptmair (Integr Equ Oper Theory 77:167–197, 2013. https://doi.org/10.1007/s00020-013...
journal article 2021
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van Dokkum, J.S. (author), Pérez-Ràfols, Francesc (author), Dorogin, Leonid (author), Nicola, L. (author)
The retraction of a cylindrical rigid indenter from a viscoelastic substrate is studied by means of an efficient Green's function method. Hysteresis is observed in the load to area relationship in accordance with experimental results. Although our model relaxes many assumptions posed by LEFM-based analytical theories, the results fall between...
journal article 2021
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Voskamp, R. (author)
Mankind has always adapted materials to fullfil a need. Recent developments in nano-science allows us to construct objects with varying permittivity and permeability. One possible structure is an invisibility cloak device. This device is put around an object. Any plane wave that enters the cloak should go around this object. The wave exits the...
bachelor thesis 2020
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Bonci, M. (author), de Jong, Pepijn (author), van Walree, Frans (author), Renilson, Martin (author), Keuning, J.A. (author), van 't Veer, A.P. (author)
The coupling between heel and the loads in the horizontal plane is usually neglected in manoeuvrability studies. However, the heel–sway and heel–yaw coupling can play an important role in potentially unsafe conditions, such as in a following sea. In these conditions, small fast vessels experience dynamic instabilities which threaten their...
journal article 2020
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Gabriel, Maarten (author)
A two-dimensional (2D) panel method is developed to find the first and second order wave forces acting on a semi-submerged cylinder in regular waves. The panel method is based on potential flow and the waves are modeled for both finite and infinite water depth. The motion is limited to heave, but allows for extensions to other modes as well. It...
master thesis 2019
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van Vlijmen, Bruis (author), Goudswaard, Reinier (author), Boere, Remco (author), Schneider, Thomas (author), Polinder, H. (author), Lavidas, G. (author)
It is expected that several identical Point Absorber Wave Energy Converters (PAWECs) will be arranged in arrays to form a Wave Energy Farm. One of the key challenges in designing such a WEC array is their spatial configuration, as the WECs in the farm interact hydrodynamically with each other. This study focuses on different potential PAWEC...
conference paper 2019
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Yuan, Jun (author)
The hyperloop system is a new transportation mode, which consists a magnetic levitating capsule-like hyperloop pod and a vacuum tube. Due to small air hindrance, the hyperloop pod is conceived to have a maximum speed of 333 m/s. If such a hyperloop system is to be built underground in soft soils, the hyperloop speed can easily reach the wave...
master thesis 2018
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Yuan, Jun (author)
A reciprocity-based direct boundary integral method and indirect boundary integral method have been introduced and used to obtain the two-dimensional response of a cylindrical cavity embedded in a uniform elastic half space subjected to SH wave. By introducing free wave field and the actual field with a cavity, the key point to solve for...
student report 2017
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Jongsma, C.J. (author)
From the bacteria living on a keyboard to algae surviving in snow, microorganisms can be found virtually everywhere on the planet. Due to their small size, microorganism swim in the low Reynolds number regime, which has important consequences for their swimming strategies. For motility, these organisms commonly use long slender filaments known...
master thesis 2016
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Ang, Y.M.E. (author)
Panel codes are used by the Maritime Reseach Institute Natherlands (MARIN) to compute flows around ships and propellers. These codes are based on Boundary Element Methods (BEM). A known drawback of BEM is that it forms dense linear system of equations that have to be solved. By improving the efficiency of the dense linear solver, the...
master thesis 2015
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Zhao, J. (author)
Rail transportation plays an important role in our everyday life, and there is fast development and modernization in the railway industry to meet the growing demand for swifter, safer and more comfortable trains. At the same time, the security of train operation and the maintenance of rails have to be considered. A lot of research on these...
doctoral thesis 2015
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Van 't Wout, E. (author)
The aim of this thesis is to design a computational method that can be used in modern stealth technology. In particular, the computational method should be capable to simulate scattering of ultra-wideband radar signals for military aircraft constructed with ferromagnetic radar absorbent materials. A full-wave boundary element method has been...
doctoral thesis 2013
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Yuan, C. (author)
Designing a fuselage involves many considerations such as strength and stability, fatigue, damage tolerance, fire and lightning resistance, thermal and acoustic insulation, production, inspection, maintenance and repair. In the background of the application of composite sandwich structures on the aircraft fuselage, the focus of the thesis is to...
doctoral thesis 2013
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Bronsgeest, M.S. (author), Kruit, P. (author)
The stability of the physical shape of an electron emitter (co)determines the stability of the performance of electron-beam equipment. A typical short-term instability of the Schottky electron source is the instability of the (100) facet at the tip end known as “collapsing rings.” This instability causes probe instabilities, but it is known from...
journal article 2008
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Zunic, Z. (author), Hribersek, M. (author), Skerget, L. (author), Ravnik, J. (author)
A numerical algorithm for the solution of the velocity-vorticity formulation of Navier-Stokes equations is presented. This formulation results in splitting of fluid flow into its kinematic and kinetic aspect. The Boundary Element Method (BEM) used for the solution of flow kinematics results in an implicit calculation of vorticity values at the...
conference paper 2006
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