Searched for: subject:"dynamics"
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Lee, J. (author), Mitici, M.A. (author)
Aircraft maintenance is key for safe and efficient aircraft operations. While most studies propose cost-efficient maintenance strategies, the safety and efficiency of these strategies need to be quantified. This paper proposes a formal framework to assess the safety and efficiency of maintenance strategies by means of agent-based modelling,...
journal article 2020
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Fu, W. (author), van Paassen, M.M. (author), Mulder, Max (author)
Limitations of a haptic device can cause distortions of the force feedback it presents. Just-noticeable difference (JND) in system dynamics is important for creating transparent haptic interaction. Based on the previous work, this article presents a unified model that extends the existing JND rule. Our approach projects the JNDs in the...
journal article 2020
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Dialynas, G. (author)
The aim of this thesis is to derive bicycle rider control models, based on experimental data, that mimic the rider in his balance control task at various forward speeds. These rider control models can help to understand cyclists falls, improve training techniques, assess the handling properties of new bicycle designs and create active balance...
doctoral thesis 2020
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Marynets, K. (author)
We present an approach that facilitates the generation of explicit solutions to atmospheric Ekman flows with a height-dependent eddy viscosity. The approach relies on applying to the governing equations, of Sturm–Liouville type, a suitable Liouville substitution and then reducing the outcome to a nonlinear first-order differential equation of...
journal article 2020
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Çelebi, A.T. (author), Jamali, S.H. (author), Bardow, André (author), Vlugt, T.J.H. (author), Moultos, O. (author)
The number of molecules used in a typical Molecular Dynamics (MD) simulations is orders of magnitude lower than in the thermodynamic limit. It is therefore essential to correct diffusivities computed from Molecular Dynamics simulations for finite-size effects. We present a comprehensive review on finite-size effects of diffusion coefficients...
journal article 2020
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Saredi, E. (author), Sciacchitano, A. (author), Scarano, F. (author)
A novel approach is investigated to extend the range of measurable velocities by 3D-PTV systems. The method is specifically conceived for robotic volumetric PTV measurements, but it has applications for other similar techniques. The multi-Δt method relies upon combining the information from two or more sets of double-frame images with pulse...
journal article 2020
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Chandramouli, P. (author), Memin, Etienne (author), Heitz, Dominique (author)
We present a variational assimilation technique (4D-Var) to reconstruct time resolved incompressible turbulent flows from measurements on two orthogonal 2D planes. The proposed technique incorporates an error term associated to the flow dynamics. It is therefore a compromise between a strong constraint assimilation procedure (for which the...
journal article 2020
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Chaves Jimenez, A. (author)
Spacecraft orbit and attitude dynamics have been classically seen as two separated<br/>subjects, since the effect of attitude in orbit dynamics was deemed too small to be<br/>considered, or simply, modeled as noise in the estimation process for most satellites.<br/>In the eighties, a study by [1] showed that for a very large spacecraft,...
doctoral thesis 2020
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Gangaram-Panday, Norani H. (author), van Essen, Tanja (author), Goos, T.G. (author), De Jonge, Rogier C.J. (author), Reiss, Irwin K.M. (author), van Weteringen, Willem (author)
Heart rate (HR) detection in premature infants using electrocardiography (ECG) is challenging due to a low signal amplitude and the fragility of the premature skin. Recently, the dynamic light scattering (DLS) technique has been miniaturized, allowing noninvasive HR measurements with a single sensor. Objective: The aim was to determine the...
journal article 2020
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Culha, Utku (author), Davidson, Zoey (author), Mastrangeli, M. (author), Sitti, Metin (author)
Self-assembly is a ubiquitous process that can generate complex and functional structures via local interactions among a large set of simpler components. The ability to program the self-assembly pathway of component sets elucidates fundamental physics and enables alternative competitive fabrication technologies. Reprogrammability offers further...
journal article 2020
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de Tavernier, D.A.M. (author), Ferreira, Carlos (author)
This paper presents a new dynamic inflow model for vertical-axis wind turbines (VAWTs). The model uses the principle of Duhamel's integral. The indicial function of the inflow- and crossflow-induction required to apply Duhamel's integral is represented by an exponential function depending on the thrust coefficient and the azimuthal position....
journal article 2020
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Jamali, S.H. (author)
Knowledge on transport properties of fluids is of great interest for process<br/>and product design development in the chemical, food, pharmaceutical, and<br/>biotechnological industry. In the past few decades, molecular simulation has<br/>become a powerful tool to calculate these properties. In this context, Molecular<br/>Dynamics (MD) is...
doctoral thesis 2020
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Tyuryukanov, I. (author)
The vast size of a modern interconnected power grid precludes controlling and operating it as a single object. Subdividing a power grid into a number of internally coherent areas allows to cope with its inherent complexity and to enable more efficient control structures. This thesis focuses on discovering the power system structure to facilitate...
doctoral thesis 2020
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Çelik, M. (author)
Steel is an indispensable material for the sustainable maintenance and progress of modern civilization. Its versatility in terms of mechanical and thermal characteristics, corrosion resistance, raw material availability, energy consumption and recyclability provides a clear advantage in a fast-changing technological landscape. In order to adapt...
doctoral thesis 2020
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Srinivasan, P. (author)
Shape-memory Alloys (SMAs) exhibit tremendous mechanical properties owing to their reversible phase transformation between the austenitic and the martensitic phase. Out of these, equi-atomic nickel-titanium (NiTi) alloys are the most widely used SMAs for various applications since the transformation occurs close to room temperature. Advances in...
doctoral thesis 2020
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Deng, Q. (author), Santos, Bruno F. (author), Curran, R. (author)
This paper presents a practical dynamic programming based methodology to optimize the long-term maintenance check schedule for a fleet of heterogeneous aircraft. It is the first time that the long-term aircraft maintenance check schedule is optimized, integrating different check types in a single schedule solution. The proposed methodology...
journal article 2020
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Krishnakumari, P.K. (author)
Cities are complex, dynamic and ever-evolving. We need to understand how these cities work in order to predict, control or optimize their operations. We have identified some open issues related to network and data complexity that need to be solved to build feasible methods for these purposes. To this end, we first build multiscale graphs...
doctoral thesis 2020
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van Biert, L. (author)
For decades, ships have been propelled by diesel engines. However, there are increasing concerns about their environmental impact. Fuel cells can provide an alternative to convert fuels directly into electricity, with high efficiencies and without hazardous emissions.<br/>Solid oxide fuel cells have a ceramic membrane, which functions at high...
doctoral thesis 2020
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Miletović, I. (author)
Flight simulators, or Flight Simulation Training Devices (FSTDs), offer great benefits in terms of safety and cost associated with pilot training and certification. To warrant uniform certification standards and to prevent adverse pilot training, (sub)system fidelity requirements are imposed by the Federal Aviation Authority (FAA) and European...
doctoral thesis 2020
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Fernandez-Toledano, Juan-Carlos (author), Rigaut, Clement (author), Mastrangeli, M. (author), de Coninck, Joel (author)
Hypothesis The contact line pinning that appears in a flow coating process over substrates patterned with chemical or physical heterogeneities has been recently applied to deposit micro- and nanoparticles with great precision. However, the mechanism underlying pinning of a receding contact line at the nanoscale is not yet well understood. In the...
journal article 2020
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