Searched for: subject:"anisotropy"
(1 - 20 of 44)

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Kaandorp, Mikael L.A. (author), Dwight, R.P. (author)
A novel machine learning algorithm is presented, serving as a data-driven turbulence modeling tool for Reynolds Averaged Navier-Stokes (RANS) simulations. This machine learning algorithm, called the Tensor Basis Random Forest (TBRF), is used to predict the Reynolds-stress anisotropy tensor, while guaranteeing Galilean invariance by making use...
journal article 2020
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Douma, L.A.N.R. (author)
Mudstones play an important role in hydrocarbon exploration and production, carbon capture and storage, and nuclear waste disposal. The high concentration of clay minerals contribute to the high intrinsic anisotropy (e.g., velocity, strength, permeability, and resistivity changes with direction) of mudstones. This high anisotropy complicates,...
doctoral thesis 2020
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Wang, Zhaojun (author), Tian, B. (author), Boom, Remko (author), van der Goot, Atze Jan (author)
Dense calcium caseinate dispersions can be transformed into hierarchically fibrous structures by shear deformation. This transformation can be attributed to the intrinsic properties of calcium caseinate. Depending on the dispersion preparation method, a certain amount of air gets entrapped in the sheared protein matrix. Although anisotropy is...
journal article 2019
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Dong, Xichao (author), Hu, Jiaqi (author), Hu, Cheng (author), Li, Y. (author), Sun, Shiyu (author)
The sub-satellite track of geosynchronous synthetic aperture radar (GEO SAR) presents the figure "8" or "O", which causes the great changes of platform motion direction and the different projection of anisotropic irregularities along the line-of-sight (LOS) direction. Due to the almost equal angle velocity to that of Earth, the GEO SAR has...
journal article 2019
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Wang, Zhaojun (author), Tian, B. (author), Boom, Remko (author), van der Goot, Atze Jan (author)
Calcium caseinate dispersions can be transformed into anisotropic, fibrous materials using the concept of shear-induced structuring. The aim of this study is to further investigate the relative importance of air bubbles and protein on the mechanical anisotropy of calcium caseinate material. In this study, the effect of air on mechanical...
journal article 2019
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Siskins, M. (author), Lee, M. (author), Alijani, F. (author), Van Blankenstein, Mark R. (author), Davidovikj, D. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
Two-dimensional (2D) materials with strong in-plane anisotropy are of interest for enabling orientation-dependent, frequency-tunable, optomechanical devices. However, black phosphorus (bP), the 2D material with the largest anisotropy to date, is unstable as it degrades in air. In this work we show that As<sub>2</sub>S<sub>3</sub> is an...
journal article 2019
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Rans, C.D. (author), Michielssen, J. (author), Walker, M.S. (author), Wang, W. (author), Hoen-Velterop, Ludmila ’t (author)
A challenge in developing an in-depth understanding of the crack growth resistance of Additively Manufactured materials is the fact that their mechanical properties have been shown to be both process and part-geometry dependent. Up to now, no studies have investigated the influence of off-axis (beyond the three orthogonal build orientations)...
journal article 2018
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Verschuur, D.J. (author), Alshuhail, A.A. (author)
Since the Earth is predominately anisotropic, the anisotropy of the medium needs to be included in seismic imaging to avoid mispositioning of reflectors and unfocused images. Deriving accurate anisotropic velocities from the seismic reflection measurements is a highly nonlinear and ambiguous process. To mitigate the nonlinearity and trade-offs...
journal article 2018
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de Vries, F.K. (author), Shen, J. (author), Skolasinski, R.J. (author), Nowak, M.P. (author), Varjas, D. (author), Wang, L. (author), Wimmer, M.T. (author), Zwanenburg, F.A. (author), Li, A. (author), Kölling, S. (author), Verheijen, M.P.A.M. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, Leo P. (author)
Low dimensional semiconducting structures with strong spin-orbit interaction (SOI) and induced superconductivity attracted great interest in the search for topological superconductors. Both the strong SOI and hard superconducting gap are directly related to the topological protection of the predicted Majorana bound states. Here we explore the...
journal article 2018
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Valliappan, Valliappan (author), Remmers, J. J.C. (author), Barnhoorn, A. (author), Smeulders, D.M.J. (author)
In this paper, we present a two-dimensional numerical model for modelling of hydraulic fracturing in anisotropic media. The numerical model is based on extended finite element method. The saturated porous medium is modelled using Biot’s theory of poroelasticity. An enhanced local pressure model is used for modelling the pressure within the...
journal article 2017
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Rocha, I.B.C.M. (author), Raijmaekers, S (author), van der Meer, F.P. (author), Nijssen, R. P.L. (author), Fischer, H. R. (author), Sluys, Lambertus J. (author)
A combined experimental and numerical investigation is conducted on the anisotropic water diffusion behaviour of unidirectional glass/epoxy composites. Experimental diffusivity values are obtained by immersing thin material slices for each of its planes of orthotropy extracted from a thick composite panel and interphase measurements are...
journal article 2017
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Alshuhail, A.A. (author)
One of the most crucial estimates obtained from reflection seismology is the seismic image. It provides a map of the subsurface reflectivities. However, in order to construct an accurate map an accurate propagation velocity model is needed. For simple geologic environments an isotropic velocity model is sufficient, however, for complex geologic...
doctoral thesis 2017
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Velichko, E. (author), Buyanov, A.L. (author), Saprykina, N.N. (author), Chetverikov, Yu.O. (author), Duif, C.P. (author), Bouwman, W.G. (author), Smyslov, R.Yu. (author)
Submicron- and micron-scale structures of composite hydrogels based on bacterial cellulose (BC) and polyacrylamide (PAAm) were studied by spin-echo small-angle neutron scattering (SESANS) and cryo-scanning electron microscopy (cryo-SEM). These hydrogels possessing the structure of interpenetrating polymer network were synthesized via free...
journal article 2017
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Qin, Hongbo (author), Luan, Xinghe (author), Feng, Chuang (author), Yang, Daoguo (author), Zhang, Kouchi (author)
For the limitation of experimental methods in crystal characterization, in this study, the mechanical, thermodynamic and electronic properties of wurtzite and zinc-blende GaN crystals were investigated by first-principles calculations based on density functional theory. Firstly, bulk moduli, shear moduli, elastic moduli and Poisson's ratios...
journal article 2017
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Naghdy, Soroosh (author), Pirgazi, Hadi (author), Verleysen, Patricia (author), Petrov, R.H. (author), Kestens, L.A.I. (author)
International Union of Crystallography. The aim of this paper is to examine the morphological and crystallographic anisotropy that develops during high-pressure torsion (HPT) processing. Commercially pure aluminium was subjected to monotonic HPT deformation at room temperature. The microstructure and texture were studied by large-area electron...
journal article 2017
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Karewar, S.V. (author), Gupta, N. (author), Groh, S. (author), Martinez, E. (author), Caro, A. (author), Srinivasan, S.G. (author)
Addition of solutes such as lithium enhances ductility of hexagonal-close-packed (hcp) magnesium (Mg). However, the atomistic underpinning of Li addition on individual deformation mechanisms remain unclear and is the focus of the present work. We compared the deformation mechanisms in nanocrystalline (NC) and single crystal simulation systems...
journal article 2017
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Van Westen, T. (author), Oyarzun Rivera, B.A. (author), Vlugt, T.J.H. (author), Gross, J. (author)
We develop an equation of state (EoS) for describing isotropic-nematic (IN) phase equilibria of Lennard-Jones (LJ) chain fluids. The EoS is developed by applying a second order Barker-Henderson perturbation theory to a reference fluid of hard chain molecules. The chain molecules consist of tangentially bonded spherical segments and are allowed...
journal article 2015
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Oyarzun, B. (author), Van Westen, T. (author), Vlugt, T.J.H. (author)
The isotropic-nematic phase equilibria of linear hard-sphere chains and binary mixtures of them are obtained from Monte Carlo simulations. In addition, the infinite dilution solubility of hard spheres in the coexisting isotropic and nematic phases is determined. Phase equilibria calculations are performed in an expanded formulation of the Gibbs...
journal article 2015
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Dutta, R.K. (author)
doctoral thesis 2015
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Hunziker, J.W. (author), Thorbecke, J.W. (author), Slob, E.C. (author)
We determined that the electromagnetic vertical transverse isotropic response in a layered earth can be obtained by solving two equivalent scalar equations, which were for the vertical electric field and for the vertical magnetic field, involving only a scalar global reflection coefficient. Besides the complete derivation of the full...
journal article 2014
Searched for: subject:"anisotropy"
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