- document
-
Sengar, A. (author), Kuipers, J. A.M. (author), van Santen, R. A. (author), Padding, J.T. (author)Particle based approaches are one of the recent modeling techniques to overcome the computational limitation in multiscale modeling of complex processes, for example a heterogeneous catalytic reactor. We propose an efficient model for a chemical reactor where hydrodynamics of the solvent is determined by Stochastic Rotation Dynamics and a...journal article 2019
- document
-
Finotello, Giulia (author), Padding, J.T. (author), Buist, Kay A. (author), Jongsma, Alfred (author), Innings, Fredrik (author), Kuipers, J. A.M. (author)In this work we investigate droplet-droplet collision interactions in a spray system using an Eulerian-Lagrangian model with subgrid turbulence dispersion. The effect of different droplet viscosities on the type and frequency of droplet collision is investigated, knowledge of which is essential for industrial processes such as spray drying...journal article 2019
- document
-
Maitri, R. V. (author), De, S. (author), Koesen, S. P. (author), Wyss, H. M. (author), van der Schaaf, J. (author), Kuipers, J. A.M. (author), Padding, J.T. (author), Peters, E.A.J.F. (author)In this work, we investigate the influence of channel structure and fluid rheology on non-inertial migration of non-Brownian polystyrene beads. Particle migration in this regime can be found in biomedical, chemical, environmental and geological applications. However, the effect of fluid rheology on particle migration in porous media remains...journal article 2019
- document
-
Kuipers, Derek A. (author), Terlouw, Gijs (author), Wartena, B.O. (author), Prins, Jelle T. (author), Pierie, Jean Pierrre E.N. (author)High fidelity is regarded as a hallmark of educational games and simulations for health education. Mainly physical and functional fidelity are associated with authenticity, resulting in the pursuit of a true-to-life simulation and suggesting the imposition of a generally accepted and often unintentional design rationale that assumes that the...journal article 2019
- document
-
Kuipers, T. (author), Wu, J. (author), Wang, C.C. (author)The fabrication flexibility of 3D printing has sparked a lot of interest in designing structures with spatially graded material properties. In this paper, we propose a new type of density graded structure that is particularly designed for 3D printing systems based on filament extrusion. In order to ensure high-quality fabrication results,...journal article 2019
- document
-
Clarke, Nicholas (author), Kuipers, M.C. (author), Stroux, S.A. (author)Continuity and change have become crucial themes for the built environment and heritage buildings; also in the education and practice of architects. Embedding built heritage values into studio-based design education is a daunting new challenge that demands new didactic perspectives and tools. To address the dilemmas that come with design...journal article 2019
- document
-
Finotello, Giulia (author), Padding, J.T. (author), Buist, Kay A. (author), Schijve, Annelien (author), Jongsma, Alfred (author), Innings, Fredrik (author), Kuipers, J.A.M. (author)Large scale simulation models can aid in improving the design of spray dryers. In this work an Eulerian-Lagrangian model with coupled gas phase and droplet heat and mass transfer balances is used to study airflow dynamics, temperature and humidity profiles at different positions in the spray. The turbulent gas flow is solved using large eddy...journal article 2019
- document
-
Alpeggiani, F. (author), Kuipers, L. (author)Bichromatic photonic crystal structures are based on the coexistence of two different periodicities in the dielectric constant profile. They are realized starting from a photonic crystal waveguide and modifying the lattice constant only in the waveguide region. In this work, we numerically investigate the spectral and topological properties...journal article 2019
- document
-
Clarke, Nicholas (author), Kuipers, M.C. (author), Roos, J. (author)Purpose – The purpose of this paper is to explore the conceptualisation of the Smart Sustainable City (SSC) with new concepts of resilience thinking in relation to urgent societal challenges facing the built environment. The paper aims to identify novel methodologies for smart reuse of heritage sites with a pluralist past as integral to...journal article 2019
- document
-
de Angelis, L. (author), Bauer, T.A. (author), Alpeggiani, F. (author), Kuipers, L. (author)When the positions of two generic singularities of equally signed topological index coincide, a higher-order singularity with twice the index is created. In general, singularities tend to repel each other when sharing the same topological index, preventing the creation of such higher-order singularities in 3D generic electromagnetic fields....journal article 2019
- document
-
Spaeth, Patrick (author), Adhikari, Subhasis (author), Le, Laurent (author), Jollans, Thomas (author), Pud, S. (author), Albrecht, Wiebke (author), Bauer, T.A. (author), Caldarola, M. (author), Kuipers, L. (author), Orrit, Michel (author)Circular dichroism (CD) spectroscopy is a powerful optical technique for the study of chiral materials and molecules. It gives access to an enantioselective signal based on the differential absorption of right and left circularly polarized light, usually obtained through polarization analysis of the light transmitted through a sample of...journal article 2019
- document
-
Finotello, Giulia (author), Kooiman, Roeland F. (author), Padding, J.T. (author), Buist, Kay A. (author), Jongsma, Alfred (author), Innings, Fredrik (author), Kuipers, J. A.M. (author)Spray drying is an important industrial process to produce powdered milk, in which concentrated milk is atomized into small droplets and dried with hot gas. The characteristics of the produced milk powder are largely affected by agglomeration, combination of dry and partially dry particles, which in turn depends on the outcome of a collision...journal article 2018
- document
-
Trajanovski, S. (author), Kuipers, F.A. (author), Hayel, Yezekael (author), Altman, Eitan (author), Van Mieghem, P.F.A. (author)Designing an optimal network topology while balancing multiple, possibly conflicting objectives like cost, performance, and resiliency to viruses is a challenging endeavor, let alone in the case of decentralized network formation. We therefore propose a game-formation technique where each player aims to minimize its cost in installing links,...journal article 2018
- document
-
Çetinay Iyicil, H. (author), Soltan, Saleh (author), Kuipers, F.A. (author), Zussman, Gil (author), Van Mieghem, P.F.A. (author)In this paper, we compare the effects of failures in power grids under the nonlinear AC and linearized DC power flow models. First, we numerically demonstrate that when there are no failures and the assumptions underlying the DC model are valid, the DC model approximates the AC model well in four considered test networks. Then, to evaluate...journal article 2018
- document
-
Mahajan, V.V. (author), Padding, J.T. (author), Nijssen, Tim M.J. (author), Buist, Kay A. (author), Kuipers, J.R. (author)Fluidization is widely used in industries and has been extensively studied, both experimentally and theoretically, in the past. However, most of these studies focus on spherical particles while in practice granules are rarely spherical. Particle shape can have a significant effect on fluidization characteristics. It is therefore important to...journal article 2018
- document
-
Kuipers, T. (author), Elkhuizen, W.S. (author), Verlinden, J.C. (author), Doubrovski, E.L. (author)This work presents a halftoning technique to manufacture 3D objects with the appearance of continuous grayscale imagery for Fused Deposition Modeling (FDM) printers. While droplet-based dithering is a common halftoning technique, this is not applicable to FDM printing, since FDM builds up objects by extruding material in semi-continuous paths....journal article 2018
- document
-
Gong, S. (author), Alpeggiani, F. (author), Sciacca, Beniamino (author), Garnett, Erik C. (author), Kuipers, L. (author)The emergence of two-dimensional transition metal dichalcogenide materials has sparked intense activity in valleytronics, as their valley information can be encoded and detected with the spin angular momentum of light. We demonstrate the valley-dependent directional coupling of light using a plasmonic nanowire-tungsten disulfide (WS<sub>2<...journal article 2018
- document
-
Kamath, S. (author), Padding, J.T. (author), Buist, K. A. (author), Kuipers, J.R. (author)A stochastic Direct Simulation Monte Carlo (DSMC) method has been extended for handling bubble-bubble and bubble-wall collisions. Bubbly flows are generally characterized by highly correlated velocities due to presence of the surrounding liquid. The DSMC method has been improved to account for these kind of correlated collisions along with a...journal article 2018
- document
-
Seelen, L. J.H. (author), Padding, J.T. (author), Kuipers, J.R. (author)A novel granular discrete element method (DEM) is introduced to simulate mixtures of particles of any convex shape. To quickly identify pairs of particles in contact, the method first uses a broad-phase and a narrow-phase contact detection strategy. After this, a contact resolution phase finds the contact normal and penetration depth. A new...journal article 2018
- document
-
Alpeggiani, F. (author), Gong, Su Hyun (author), Kuipers, L. (author)The two-dimensional excitons of transition metal dichalcogenide (TMDC) monolayers make these materials extremely promising for optical and optoelectronic applications. When the excitons interact with the electromagnetic field, they will give rise to exciton-polaritons, i.e., modes that propagate in the material plane while being confined in...journal article 2018