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Emmerink, J.V. (author), Hadi, A.H. (author), Jovanova, J. (author), Cleven, Chris (author), Schott, D.L. (author)To improve the understanding of the mixing performance of double shaft, batch-type paddle mixers, the discrete element method (DEM) in combination with a Plackett–Burman design of experiments simulation plan is used to identify factor significance on the system’s mixing performance. Effects of several factors, including three material properties...journal article 2023
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Hadi, A.H. (author), Roeplal, R.N. (author), Pang, Y. (author), Schott, D.L. (author)Segregation control is a challenging yet crucial aspect of bulk material handling processes. The discrete element method (DEM) can offer useful insights into segregation phenomena, provided that reliable models are developed. The main challenge in this regard is finding a good balance between including particle-level details and managing the...journal article 2023
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Thornton, Anthony R. (author), Plath, Timo (author), Ostanin, Igor (author), Götz, Holger (author), Bisschop, Jan Willem (author), Hassan, Mohamed (author), Roeplal, R.N. (author), Wang, Xiuqi (author), Pourandi, Sahar (author), Weinhart, Thomas (author)In this paper we introduce the open-source code MercuryDPM: a code for simulating discrete particles. The paper discusses software and management issues that may be interesting for the developers of other open-source codes. Then we review the new features that have been added since the last publication: an improved Hertz-Mindlin model; a new...journal article 2023
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Sivakumar, Vinayagamoorthy (author), Fanning, Joseph (author), Gavin, Kenneth (author), Tripathy, Snehasis (author), Bradshaw, Aaron (author), Murray, Edward J. (author), Black, Jonathan (author), Donohue, Shane (author)This paper presents data from an initial development stage of an 'umbrella anchor' concept. The anchor can be pushed into sand deposit in a folded arrangement to reduce installation loads. When a pull-out load is applied to the mooring line, the anchor deploys to create a large embedded plate anchor. Physical modelling was carried out in...journal article 2023
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O'Kelly, Brendan C. (author), Nogal Macho, M. (author)This paper presents a critical review of the grading entropy approach of permeability-coefficient predictions (k P) for coarse-grained soils. The approach applies the grading entropy theory to particle-size distributions (PSDs), such that the entirety of each gradation curve can be interpreted as a single point on a grading entropy chart,...journal article 2020
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Weinhart, Thomas (author), Orefice, Luca (author), Post, Mitchel (author), van Schrojenstein Lantman, Marnix P. (author), Denissen, Irana F.C. (author), Tunuguntla, Deepak R. (author), Tsang, J. M.F. (author), de Oliveira Barbosa, J.M. (author), Shi, H. (author)We introduce the open-source package MercuryDPM, which we have been developing over the last few years. MercuryDPM is a code for discrete particle simulations. It simulates the motion of particles by applying forces and torques that stem either from external body forces, (gravity, magnetic fields, etc.) or particle interactions. The code has...journal article 2020
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Foortse, Bjorn (author), Visser, P.J. (author), Bisschop, Rik (author), van Rhee, C. (author)Significant reduction of the rate of erosion of a sand bed is obtained when sand is mixed with a small amount of bentonite. In previous experiments this behaviour has already been shown for relatively low flow velocities. In this case, the erosion process is dominated by grain-by-grain erosion, which is characterised by low ratios of the...journal article 2019
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Bakker, M.C.M. (author), Xia, H. (author)Optical inspection of a thick layer of granules for foreign particles does not directly reveal their true number and the more so if the layer is not homogenous. This raises questions such as “how do I know if the layer is homogenous?” and “what is the relation between the observable particles and the true number?” In this work a theory is...conference paper 2016
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Lemmens, D. (author), Bisschop, F. (author), Visser, P.J. (author), van Rhee, C. (author)Dikes constructed from sand generally have a sand core and clay layers on the slopes and the crest to protect the core against erosion. In extreme hydraulic conditions, several failure mechanisms can lead to destruction of the clay layers, exposing the sand core to water. When water overtops the dike and the protective cover of the land-side...journal article 2016
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Derakhshani, S.M. (author), Schott, D.L. (author), Lodewijks, G. (author)Dust emissions can have significant effects on the human health, environment and industry equipment. Understanding the dust generation process helps to select a suitable dust preventing approach and also is useful to evaluate the environmental impact of dust emission. To describe these processes, numerical methods such as Computational Fluid...conference paper 2013
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Göncü, F. (author)From pharmaceutical to mining or traveling desert dunes to earthquakes, granular materials are at the heart of many industries and natural phenomena. Improving the efficiency of the machines handling them or, constructing safer buildings requires a critical understanding of their behavior. However, this is not a straightforward task as opposed...doctoral thesis 2012
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- Tighe, B.P. (author), Van Eerd, A.R.T. (author), Vlugt, T.J.H. (author) journal article 2009
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- Khalili Amiri, P. (author) doctoral thesis 2008
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- Andersson, R.A. (author) doctoral thesis 2008
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Khalili Amiri, P. (author), Zhuang, Y. (author), Schellevis, H. (author), Rejaei, B. (author), Vroubel, M. (author), Ma, Y. (author), Burghartz, J.N. (author)This work presents a series of high-resistivity nanogranular Co–Al–O films with maximum resistivity of ? 110?m??cm. The films were deposited using pulsed dc reactive sputtering of a Co72Al28 target in an oxygen/argon ambient. The samples were characterized by scanning electron microscopy (SEM), M-H loop measurements, and s-parameter measurements...journal article 2007
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Christakis, N. (author), Chapelle, P. (author), Patel, M.K. (author), Cross, M. (author)Many industrial processes involve particulates with materials ranging from pharmaceuticals, ceramics, cosmetics and foods. Common to all these particulate processes is the discharge of granular material from bins/hoppers in either mass flow mode (i.e. all material regions in the domain are in motion) or core flow mode (i.e. there is a flowing...conference paper 2006
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Zhuang, Y. (author), Vroubel, M. (author), Rejaei, B. (author), Burghartz, J.N. (author), Attenborough, K. (author)A granular NiFe thin film with large in-plane magnetic anisotropy and high ferromagnetic-resonance frequency developed for radio-frequency integrated circuit (IC) applications is presented. During the deposition, three-dimensional (3D) growth occurs, yielding NiFe grains (? ? 1.0??m). Nanonuclei (? ? 30–50?nm) are observed in single NiFe grains...journal article 2005
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- Hofland, B. (author) report 2002
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Huurman, M. (author)Concrete block pavements (c.b.p.) commonly consist of concrete blocks placed over a granular substructure. As a result of wheel load passages permanent strains will slowly develop in the substructure and cause rutting. This paper is about the prediction of the permanent strain development in the substructure and the associated rutting on the...journal article 1996