Searched for: subject:"Bifurcation"
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Symes, Patrick (author)
This thesis aims to provide insight into the conceptual design phase of Tetrahedron B.V. with regards to buckling stability. Currently, Tetrahedron B.V. assumes an effective length factor of one for determining the cross-section profiles of the Tetrahedron Crane. In this thesis, Euler-Bernoulli beams are used to model every member of this crane,...
master thesis 2020
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Donkers, Paul (author)
The goal of this thesis is to create a theoreticalmodel that captures the influence of wind on the horizontal and vertical salinity distribution in an estuary, as well as the dynamics that arise within the estuary. A secondary, numerical model, that uses fewer assumptions, will be developed and analysed. This serves to determine whether the...
master thesis 2020
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Xia, Jingmin (author), Farrell, Patrick E. (author), Castro, Saullo G.P. (author)
When loading experiments are repeated on different samples, qualitatively different results can occur. This is due to factors such as geometric imperfections, load asymmetries, unevenly stressed regions or uneven material distributions created by manufacturing processes. This fact makes designing robust thin-walled structures difficult. One...
journal article 2020
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Karamitopoulos, P. (author)
Process-based stratigraphic models provide attractive tools to simulate sedimentary system dynamics spanning a wide range of spatial and temporal scales and segments of the sediment routing system while allowing full access to the model responses, i.e. the spatial distribution of lithologies as a function of the intervening processes and...
doctoral thesis 2020
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Collet, F. (author), Kraaij, R.C. (author)
We modify the spin-flip dynamics of the Curie–Weiss model with dissipation in Dai Pra, Fischer and Regoli (2013) by considering arbitrary transition rates and we analyze the phase-portrait as well as the dynamics of moderate fluctuations for macroscopic observables. We obtain path-space moderate deviation principles via a general analytic...
journal article 2020
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Gasull, A. (author), Geyer, A. (author), Mañosas, F. (author)
We show that a family of certain definite integrals forms a Chebyshev system if two families of associated functions appearing in their integrands are Chebyshev systems as well. We apply this criterion to several examples which appear in the context of perturbations of periodic non-autonomous ODEs to determine bounds on the number of isolated...
journal article 2020
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Bax, Rutger (author)
This thesis research has been conducted to analyse the sediment dynamics in the Yangon Estuary, in order to define the cause for the sedimentation in Monkey Point Channel. For years, Yangon Port has been suffering from limited accessibility due to the sedimentation in the channel and currently daily dredging is required in order to let ships...
master thesis 2019
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van de Kamp, Carsten T. (author)
We consider adaptive network models with discrete and continuous state sets obeying dynamical rules that enable application to swarming systems. The 2-state adaptive network contains a supercritical pitchfork bifurcation in the transition between ordered and disordered stationary solutions. We derive an adaptive network model that works on a...
bachelor thesis 2019
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Hermans, Carlos (author)
This thesis investigates several kinds of models of describing multi-commodity dynamical flow. Three models have been developed for a spatial logistic network, on which packages are delivered by vehicles and another<br/>model was developed to describe interactions between the customers, the stores and the deliverers, which does not explicitly...
master thesis 2019
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Hermidas, N. (author)
Submarine gravity flows constitute the last link in the source-to-sink sediment transport chain. They are the main mechanism for the transportation of sediment from the shallower to the deeper parts of the ocean. Due to their great volume, mobility, and power, they pose a formidable threat to the offshore infrastructures, and can generate...
doctoral thesis 2019
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van Denderen, R. Pepijn (author), Schielen, R.M.J. (author), Straatsma, Menno W. (author), Kleinhans, Maarten G. (author), Hulscher, Suzanne J.M.H. (author)
Side channels are commonly constructed to reduce the flood risk or to increase the ecological value of a river. Such artificial side channels generally aggrade. We categorize the development of side channels based on the sediment that is deposited in these channels. Based on this categorization, we determine the main mechanisms that affect their...
journal article 2019
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Zammert, S. (author), Eckhardt, B.E. (author)
Plane Poiseuille flow, the pressure-driven flow between parallel plates, shows a route to turbulence connected with a linear instability to Tollmien-Schlichting (TS) waves, and another route, the bypass transition, that can be triggered with finite-amplitude perturbation. We use direct numerical simulations to explore the arrangement of the...
journal article 2019
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Rogov, Kirill (author), Pogromsky, Alexander (author), Steur, E. (author), Michiels, Wim (author), Nijmeijer, Henk (author)
In this paper, a method for pattern analysis in networks of diffusively coupled nonlinear systems of Lur'e form is presented. We consider a class of nonlinear systems which are globally asymptotically stable in isolation. Interconnecting such systems into a network via diffusive coupling can result in persistent oscillatory behavior, which...
journal article 2019
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Chandrashekar, A. (author), Belardinelli, P. (author), Staufer, U. (author), Alijani, F. (author)
In this work, we perform a comprehensive analysis of the robustness of attractors in tapping mode atomic force microscopy. The numerical model is based on cantilever dynamics driven in the Lennard–Jones potential. Pseudo-arc-length continuation and basins of attraction are utilized to obtain the frequency response and dynamical integrity of...
journal article 2019
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Le, T.B. (author)
Rivers have been trained for centuries by series of transverse groynes. This generally results in damages to their ecosystems as well as in undesirable longterm morphological developments. We analyze here the possibility to train rivers in a new way by subdividing their channel in parallel channels with specific functions with longitudinal...
doctoral thesis 2018
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Schielen, Ralph M.J. (author), Blom, A. (author)
We derive an idealized model of a gravel-sand river bifurcation and analyze its stability properties. The model requires nodal point relations that describe the ratio of the supply of gravel and sand to the two downstream branches. The model predicts changes in bed elevation and bed surface gravel content in the two bifurcates under...
journal article 2018
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Grazian, Francesca (author)
The Wireless Power Transfer (WPT) has been introduced decades ago for low power applications, and more recently, it has been used for industrial high power applications. WPT is gaining popularity because it presents several advantages over the power transfer through cable, such as the galvanic insulation between the power source and the load,...
master thesis 2018
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Crespo Pradell, Oriol (author)
This master thesis focuses in the study of the application of active flow control in the transitional regime (Re ≈ 3E3) at the rear part of the roof of a 2D Ahmed body geometry. To do so, the natural bifurcations of the problem (which separate the ordered laminar behavior from the first pre-turbulent chaotic behavior) are studied, and different...
master thesis 2018
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Gaiko, Valery A. (author), Vuik, Cornelis (author)
We complete the global bifurcation analysis of the Leslie-Gower system with the Allee effect which models the dynamics of the populations of predators and their prey in a given ecological or biomedical system. In particular, studying global bifurcations of limit cycles, we prove that such a system can have at most two limit cycles surrounding...
journal article 2018
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Le, T.B. (author), Crosato, A. (author), Mosselman, E. (author), Uijttewaal, W.S.J. (author)
To maintain a navigable channel and improve high-flow conveyance, engineers have recently proposed constructing longitudinal training walls as an alternative to the traditional transverse groynes. However, previous work has shown that the system of parallel channels created by a longitudinal training wall might be unstable in rivers with...
journal article 2018
Searched for: subject:"Bifurcation"
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