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Buist, K. A. (author), Nijssen, Tim M.J. (author)Magnetic Particle Tracking (MPT) is a relatively new non-invasive measurement technique which is often used to study dense granular flow. Its basic principle relies on tracking the movement of a single magnetic tracer by means of measuring the magnetic field strength at a suitable distance from the tracer. By assumption of a magnetic dipole...journal article 2023
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Sonneveld, D.D. (author), Nijssen, J.P.A. (author), van Ostayen, R.A.J. (author)Compliant joints have significant advantages compared to rigid-body hinges due to a monolithic design and the absence of friction, which prevents effects like wear, backlash, and stick-slip behavior. However, the loading capability is often limited and the support stiffness generally decreases during rotation. A new design principle called...journal article 2023
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Nijssen, Tim M.J. (author), Padding, J.T. (author), Ottens, M. (author)The hydrodynamics of the Expanded Bed Adsorption process is studied through simulations combining Computational Fluid Dynamics and the Discrete Element Method. A representative base case is defined, based on process design parameters commonly encountered in literature. Then, 19 other cases are defined, each representing a singular adjustment...journal article 2023
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Nijssen, Tim M.J. (author), Ottens, M. (author), Padding, J.T. (author)Lubrication forces play a major role in the behaviour of fluid–solid systems, where they affect the collisions between particles. Current implementations of lubrication forces in unresolved simulations often suffer from shortcomings, such as neglecting parts of the physics or relying on arbitrarily defined parameters. In this short...journal article 2023
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Nijssen, J.P.A. (author)Full film lubricated bearings are machine components that excel in their ability to carry high loads with very little friction. Their main archetypes, passive hydrodynamic and active hydrostatic bearings, are used in a wide variety of applications, ranging from hydraulic pumps to high precision machine benches. They are most commonly lubricated...doctoral thesis 2022
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Ghotge, R. (author), Nijssen, K.P. (author), Annema, J.A. (author), Lukszo, Z. (author)This study aims to investigate the consumer acceptance of Vehicle-to-Grid (V2G) charging of electric vehicle (EV) drivers. To the best of the authors’ knowledge, this is the first V2G acceptance study that is based on actual users’ experience of V2G charging. A test set up with a V2G charge point at a solar carport was constructed at the Delft...journal article 2022
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Nijssen, J.P.A. (author), Faludi, Jeremy (author), van Ostayen, R.A.J. (author)Water lubricated bearings have been named in literature as a sustainable alternative to their oil-based counterparts. In order to clarify when water lubricated bearings are or are not a sustainable alternative, and inform design decisions, an analytical design tool is introduced based on anticipatory Life Cycle Assessment (LCA). This model is...journal article 2021
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van Parijs, Vincent (author), Nijssen, J.P.A. (author), van Ostayen, R.A.J. (author)Hydrostatic bearings are superior in terms of their friction and load carrying characteristics when compared to contact based bearings, but non-usable in applications with non-constant curvature counter surfaces. A possible solution to this limitation is the introduction of deformable hydrostatic bearings components that cope with these...journal article 2021
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Nijssen, T.M.J. (author), Kramer, O.J.I. (author), de Moel, P.J. (author), Rahman, J. (author), Kroon, J.P. (author), Berhanu, P. (author), Boek, E.S. (author), van der Hoek, J.P. (author), Padding, J.T. (author)Liquid-solid fluidisation is frequently encountered in drinking water treatment processes, for instance in seeded crystallisation softening processes. For modest superficial fluid velocities, liquid–solid fluidisation systems are generally considered to be homogeneous, as reported in literature. However, during fluidisation experiments with...journal article 2021
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Boogaard, Bob (author), Tas, Ali (author), Nijssen, J.P.A. (author), Broeren, F.G.J. (author), van den Dobbelsteen, J.J. (author), Verhoeven, Vincent (author), Pluim, Jip (author), Dekker, Sing (author), Snijder, Eric J. (author), van Hemert, Martijn J. (author), Herfst, Sander (author)The SARS-CoV-2 pandemic resulted in shortages of production and test capacity of FFP2-respirators. Such facemasks are required to be worn by healthcare professionals when performing aerosol-generating procedures on COVID-19 patients. In response to the high demand and short supply, we designed three models of facemasks that are suitable for...journal article 2021
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Blad, Thijs (author), Nijssen, J.P.A. (author), Broeren, F.G.J. (author), Boogaard, Bob (author), Lampaert, S.G.E. (author), van den Toorn, Stefan (author), van den Dobbelsteen, J.J. (author), Spaander, Joshua (author)Introduction: The current COVID-19 pandemic has caused large shortages in personal protective equipment, leading to hospitals buying their supplies from alternative suppliers or even reusing single-use items. Equipment from these alternative sources first needs to be tested to ensure that they properly protect the clinicians that depend on...journal article 2020
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A combined experimental/numerical investigation on hygrothermal aging of fiber-reinforced compositesRocha, I.B.C.M. (author), van der Meer, F.P. (author), Raijmaekers, S. (author), Lahuerta, F. (author), Nijssen, R. P.L. (author), Mikkelsen, L. P. (author), Sluys, Lambertus J. (author)This work investigates hygrothermal aging degradation of unidirectional glass/epoxy composite specimens through a combination of experiments and numerical modeling. Aging is performed through immersion in demineralized water. Interlaminar shear testes are performed after multiple conditioning times and after single immersion/redrying cycles....journal article 2019
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Rocha, I.B.C.M. (author), van der Meer, F.P. (author), Raijmaekers, S. (author), Lahuerta, F. (author), Nijssen, R. P.L. (author), Sluys, Lambertus J. (author)This paper investigates the viscoelastic/viscoplastic/fracture behavior of an epoxy resin. A state-of-the-art pressure-dependent elastoplastic constitutive model (Melro et al. 2013) is expanded to include viscoelasticity, viscoplasticity and a modified damage formulation with linear softening and shrinking pressure-dependent fracture surface. A...journal article 2019
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Nijssen, J.P.A. (author), Kempenaar, Anton (author), Diepeveen, Niels (author)The DOT concept for offshore wind energy is a seawater hydraulic network where turbines are directly coupled to a centralized hydro-power platform. The essential missing component is a low-speed hydraulic pump that uses seawater as its hydraulic medium. This low speed hydraulic pump is currently being designed and tested by DOT, where novel...conference paper 2018
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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
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Mahajan, V.V. (author), Nijssen, Tim M.J. (author), Kuipers, J.R. (author), Padding, J.T. (author)Fluidised beds are used in a variety of processes because of their favourable mass and heat transfer characteristics. In this and many other processes, non-spherical particles are commonplace, which can drastically affect the fluidisation behaviour. In this study, we use numerical models to study non-spherical fluidisation behaviour in detail...journal article 2018
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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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Rocha, I.B.C.M. (author), Raijmaekers, S (author), Nijssen, RPL (author), van der Meer, F.P. (author), Sluys, Lambertus J. (author)In this work, a glass/epoxy material system applied in wind turbine blades was used to evaluate degradation processes induced by water ingression. Composite and neat epoxy specimens were conditioned in demineralised water at 50 °C for 4800 h and tested quasi-statically and in fatigue. Comparing results from mechanical tests in composite...journal article 2017
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Rocha, I.B.C.M. (author), van der Meer, F.P. (author), Nijssen, RPL (author), Sluys, Lambertus J. (author)In this work, a numerical framework for modelling of hygrothermal ageing in laminated composites is proposed. The model consists of a macroscopic diffusion analysis based on Fick's second law coupled with a multiscale FE<sup>2</sup> stress analysis in order to take microscopic degradation mechanisms into account. Macroscopic material points...journal article 2017
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Mahajan, V.V. (author), Nijssen, Tim M.J. (author), Fitzgerald, B. (author), Hofman, Jeroen (author), Kuipers, Hans (author), Padding, J.T. (author)Multiphase (gas-solid) flows are encountered in numerous industrial applications such as pharmaceutical, food, agricultural processing and energy generation. A coupled computational fluid dynamics (CFD) and discrete element method (DEM) approach is a popular way to study such flows at a particle scale. However, most of these studies deal with...journal article 2017
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