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Reuver, G. (author)Urban areas in the Netherlands are expending rapidly and civilization is squeezed onto a decreasing space. As a result building projects intent to be located very close to adjacent constructions leading to potential risk damaging these structures. Especially structures that are constructed within the subsurface, like cables and ducts, require...master thesis 2016
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Romanelli, G. (author)Verifying the working principle of a magnetic flux compression reaction chamber might be crucial for the development of pulsed fusion propulsion: a system that has been projected to possibly revolutionise manned space exploration. For that purpose, an exhaustive computational MHD analysis is a necessary step. This master thesis investigated the...master thesis 2016
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Katsigiannis, G. (author), Schweiger, H.F. (author), Ferreira, P. (author), Fuentes, R. (author)This paper focuses on the derivation of design prop loads for supported excavations in stiff clay with increasing excavation depth and number of prop levels. For multi-propped walls there are a number of empirical graphs to obtain the design prop forces. CIRIA C517 (Twine & Roscoe, 1999) enhancing Terzaghi & Peck's work (Terzaghi & Peck (1967)...conference paper 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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Brändle de Motta, J.C. (author), Breugem, W.P. (author), Gazanion, B. (author), Estivalezes, J.L. (author), Vincent, S. (author), Climent, E. (author)A general model is presented for short-range hydrodynamic interactions and head-on particle-particle/wall collisions. The model has been embedded in two distinct numerical methods for fully resolved simulation of finite-size particles in a viscous fluid. It accounts for the material properties of the particles and lubrication effects prior to...journal article 2013
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Ooms, G. (author), Pourquie, M.J.B.M. (author), Beerens, J.C. (author)A numerical study has been made of horizontal core-annular flow: the flow of a high-viscosity liquid core surrounded by a low-viscosity liquid annular layer through a horizontal pipe. Special attention is paid to the question how the buoyancy force on the core, caused by a density difference between the core and the annular layer, is...journal article 2013
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Hoang, D.A. (author), Van Steijn, V. (author), Portela, L.M. (author), Kreutzer, M.T. (author), Kleijn, C.R. (author)Modeling of low-Capillary number segmented flows in microchannels is important for the design of microfluidic devices. We present numerical validations of microfluidic flow simulations using the volume-of-fluid (VOF) method as implemented in OpenFOAM. Two benchmark cases were investigated to ensure the reliability of OpenFOAM in modeling complex...conference paper 2012
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Verbruggen, W. (author)Local geometrical perturbations in alluvial channels can generate a pattern of alternate bars. Each bar is accompanied by a pool at the other side of the channel. This pool can decrease the strength of the bank, which can result in bank failure and bars can hinder navigation. Furthermore, non-migrating alternate bars are considered to be a...master thesis 2012
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Kenjeres, S. (author)Motivated by the concept of interdependency of turbulent flow and electromagnetic fields inside the spiraling galaxies, we explored the possibilities of generating a localized Lorentz force that will produce a three-dimensional swirling flow in weakly conductive fluids. Multiple vortical flow patterns were generated by combining arrays of...journal article 2011
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Wadman, W.S. (author)In this thesis, an extension of the Heston model to the multi-dimensional case will be investigated. Most attention will be given to design a multi-asset Monte Carlo method, which can efficiently simulate multivariate random variables with almost no bias. The prevention of negative variance in the discretization method will be a challenge, as...master thesis 2010
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Leentvaar, C.C.W. (author)Multi-asset options are based on more than one underlying asset, in contrast to standard vanilla options. A very significant problem within the pricing techniques for multi-asset options is the curse of dimensionality. This curse of dimensionality is the exponential growth of the complexity of the problem when the dimensionality increases,...doctoral thesis 2008
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- Wenneker, I. (author), Groeneweg, J. (author) report 2007
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- Vledder, G.P. van (author), Zijlema, M. (author), Rogers, W.E. (author), Groeneweg, J. (author) report 2007
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Niazmand, H. (author), Sepehr, A. (author), Shahabi, P.B. (author)A numerical analysis based on a finite volume approach is employed for a 2-D axisymmetric, incompressible, laminar and transient flow in order to simulate the pulsatile blood flow in aneurysm. The unsteady nature of the blood is studied for three Womersley numbers and for three rheological models including Newtonian, Power law and Quemada. A...conference paper 2006
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Naghib-Lahouti, A. (author), Tolouei, E. (author)Aerospike nozzles are known to produce more thrust than conventional convergent-divergent nozzles in off-design conditions because of their capability to adapt their boundaries to ambient conditions. However, the central plug of an ideal aerospike nozzle can be very long and heavy, and its sharp end is susceptible to deformation in high...conference paper 2006
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Oweis, G.F. (author), Van der Hout, I.E. (author), Tryggvason, G. (author), Ceccio, S.L. (author)Motivated by the need to predict vortex cavitation inception, a study has been conducted to investigate bubble capture by a concentrated line vortex of core size rc and circulation ?0 under noncavitating and cavitating conditions. Direct numerical simulations that solve simultaneously for the two phase flow field, as well as a simpler one-way...journal article 2005
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Holmen, J. (author), Hughes, T.J.R. (author), Oberai, A.A. (author), Wells, G.N. (author)The variational multiscale method has been shown to perform well for large-eddy simulation (LES) of turbulent flows. The method relies upon a partition of the resolved velocity field into large- and small-scale components. The subgrid model then acts only on the small scales of motion, unlike conventional LES models which act on all scales of...journal article 2004
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Li, Y. (author), McLaughlin, J.B. (author), Kontomaris, K. (author), Portela, L. (author)This paper presents results for the behavior of particle-laden gases in a small Reynolds number vertical channel down flow. Results will be presented for the effects of particle feedback on the gas-phase turbulence and for the concentration profile of the particles. The effects of density ratio, mass loading, and particle inertia will be...journal article 2001
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Miyazaki, K. (author), Srinivas, G. (author), Bagchi, B. (author)The Enskog theory for the self-diffusion coefficient for fluids with continuous potentials, such as the Lennard-Jones, is developed. Starting from the Green–Kubo formula (rather than the conventional kinetic equation) and introducing the similar assumptions upon which the Boltzmann equation is based, we derived a general expression for the...journal article 2001
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- Ris, R.C. (author), Somers, C.M.G. (author) report 1999