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van Duijvenbode, J.R. (author), Buxton, M.W.N. (author)
Metallurgical attributes are often omitted from the mine to metal valuation models since they are either absent or unreliable. However, recent developments in sensor technology indicate the potential to collect information on metallurgical properties directly or by measurement of proxies. Integrating this information back into the resource model...
conference paper 2019
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Tambe, S.S. (author), Schrijer, F.F.J. (author), Gangoli Rao, A. (author), Veldhuis, L.L.M. (author)
Boundary layer instabilities and the formation of coherent spiral vortices over a rotating cone and ellipsoid are studied experimentally. It is found that under a non-axial inflow, the breaking of symmetry in the flow field significantly disturbs the coherence and delays the formation of spiral vortices to higher local Reynolds numbers (Re_l)...
conference paper 2019
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Laguarda Sanchez, L. (author), Hickel, S. (author), Schrijer, F.F.J. (author), van Oudheusden, B.W. (author)
The dynamic interaction of two planar and asymmetric shock waves at a free-stream Mach number M¥ = 3 is studied numerically in order to characterize the transition between the regular (RI) and Mach (MI) interaction patterns. Shock deflection disturbances are independently introduced in the form of a sinusoidal oscillation of the shock generator....
conference paper 2019
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Hu, W. (author), Hickel, S. (author), van Oudheusden, B.W. (author)
The unsteadiness of shock wave-boundary layer interactions is investigated in a transitional backward-facing step flow at Ma=1:7 and Red0 =13718 using large eddy simulation. The mean and instantaneous flow shows that the laminar inflow undergoes a laminar-to-turbulence transition in which Kelvin-Helmholtz vortices form, distort and eventually...
conference paper 2019
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Laguarda Sanchez, L. (author), Schrijer, F.F.J. (author), van Oudheusden, B.W. (author), Hickel, S. (author)
An experimental investigation of shock-shock interactions has been conducted with the aim of studying the transition between Regular (RI) and Mach (MI) interactions induced by a variation of the inflow Mach number. The experiments were conducted in the TST-27 wind tunnel at Delft University of Technology. For all cases, the wind tunnel runs were...
conference paper 2019
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Chockalingam, S. (author), Pieters, W. (author), Teixeira, Andre M. H. (author), Khakzad Rostami, N. (author), van Gelder, P.H.A.J.M. (author)
Because of modern societies' dependence on industrial control systems, adequate response to system failures is essential. In order to take appropriate measures, it is crucial for operators to be able to distinguish between intentional attacks and accidental technical failures. However, adequate decision support for this matter is lacking. In...
conference paper 2019
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Alons-Hoen, Kristel (author), Somers, Guy (author), van Duin, Ron (author)
In order to meet emission targets for 2050 in Europe transport needs to be executed more 2 efficiently. A promising way to make transport more efficient is synchromodal transport. When the 3 service provider has more flexibility to arrange transport, the utilization and use of intermodal transport, 4 such as rail, can be increased and emissions...
conference paper 2019
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Snelder, M. (author), Wilmink, Isabel (author), van der Gun, J.P.T. (author), Bergveld, HJ (author), Hoseini, Parvin (author), van Arem, B. (author)
This paper presents a model specifically developed to explore the mobility impacts of connected and automated driving and shared mobility. It is an explorative iterative model that uses an elasticity model for destination choice, a multinomial logit model for mode choice and a network fundamental diagram to assess traffic impacts. To the best of...
conference paper 2019
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Kiel, J (author), Taale, Henk (author)
In Europe, different road authorities have to face the ever increasing pressure to integrate their road network service provision with - often conflicting - different trends and conditions such as congestion, climate change, individualism, urbanization, safety, environmental issues and economic growth. There is also a need to cooperate with...
conference paper 2019
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Zamboni, J. (author), Vos, Roelof (author), Emeneth, Mathias (author), Schneegans, Alexande (author)
The growing interest into hybrid electric propulsion as a possible solution to reduce in-flight emissions has led to the investigations of many innovative propulsive system architectures that couple higher system efficiency with improved aerodynamic propulsion integration strategies. The paper presents amethodology to model and size generic...
conference paper 2019
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van Dercreek, C.P. (author), Manjunath, P. (author), Ragni, D. (author), Snellen, M. (author)
This study investigated how embedding microphones in different cavity geometries reduce the measured turbulent boundary layer pressure fluctuations at the microphones. The cavity geometries were systematically varied using a design of experiments (DOE) methodology. This approach tested different cavity depths, diameters, chamfers, and opening...
conference paper 2019
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Schouten, T.J.E. (author), Hoogreef, M.F.M. (author), Vos, Roelof (author)
Four regional turboprop aircraft of different configuration are assessed on their key performance indicators by using an automated conceptual design method. The configurations include two wing-mounted propeller installations (high-wing and low-wing) as well as a fuselagemounted configuration and a tail-mounted configuration. The effect of the...
conference paper 2019
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Avallone, F. (author), Casalino, D. (author), Ragni, D. (author)
A computational study of two Diffuser-Augmented Wind Turbines (DAWTs) is carried out to investigate both the hydrodynamic flow field and the far-field noise. The two configurations differ for the tip-clearance ratio, defined as the ratio between the tip clearance and the rotor radius. The DonQi® wind turbine, a three blades ducted rotor, is...
conference paper 2019
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Scharenborg, O.E. (author), van der Gouw, Nikki (author), Larson, M.A. (author), Marchiori, Elena (author)
In this paper, we investigate the connection between how people understand speech and how speech is understood by a deep neural network. A naïve, general feed-forward deep neural network was trained for the task of vowel/consonant classification. Subsequently, the representations of the speech signal in the different hidden layers of the DNN...
conference paper 2019
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Kouwenhoven, Leo P. (author)
We present an overview of Majorana qubits based on one-dimensional semiconducting nanowires partially covered with a conventional superconductor. Majorana zero modes emerge at the wire ends when this hybrid system transitions from a conventional superconducting phase to a topological phase, in general occurring on increasing a magnetic field....
conference paper 2019
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Bountouridis, D. (author), Harambam, Jaron (author), Makhortykh, Mykola (author), Marrero Llinares, M. (author), Tintarev, N. (author), Hauff, C. (author)
The growing volume of digital data stimulates the adoption of recommender systems in different socioeconomic domains, including news industries. While news recommenders help consumers deal with information overload and increase their engagement, their use also raises an increasing number of societal concerns, such as “Matthew effects”, “filter...
conference paper 2019
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Remmerswaal, G. (author), Bolognin, M. (author), Vardon, P.J. (author), Hicks, M.A. (author), Rohe, A. (author)
This paper describes current work on the implementation of non-trivial boundary conditions (BCs) for improving the general applicability of the Material Point Method (MPM) to geotechnical boundary values problems. It summarises novel boundary treatments (non-trivial BCs) in MPM for (i) flow conditions, as well as (ii) the application of a...
conference paper 2019
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Roelofs, M.N. (author), Vos, Roelof (author)
Evaluation and assessment of novel technologies for aerospace applications is essential for business strategy and decision making regarding development efforts. However, technology evaluation and assessment are challenging to perform objectively using a structured approach. As a first step towards a more objective and structured approach a graph...
conference paper 2019
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Slingerland, G. (author), Lukosch, S.G. (author), Comes, M. (author), Brazier, F.M. (author)
Resilient communities are an important prerequisite to reach urban resilience. In such communities, citizens need to be able to participate for improving liveability and safety of their environment. The playable city, where participation is key, provides the environment for this process to unfold. This paper researches requirements for the...
conference paper 2019
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Kazaz, T. (author), Coutiño Minguez, M.A. (author), Janssen, G.J.M. (author), Leus, G.J.T. (author), van der Veen, A.J. (author)
Synchronization and ranging in internet of things (IoT) networks are challenging due to the narrowband nature of signals used for communication between IoT nodes. Recently, several estimators for range estimation using phase difference of arrival (PDoA) measurements of narrowband signals have been proposed. However, these estimators are based...
conference paper 2019
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