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Schouten, T.D. (author), Keetels, G.H. (author), van Rhee, C. (author)In dredging applications, deep sea mining and land reclamation projects typically large amounts of sediments are transported through pipes in the form of hyper concentrated (40% sediment or more) sediment-water mixtures or slurry. These slurries can flow at three different regimes. 1: fully suspended (homogeneous and stratified) 2: partially...conference paper 2019
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Kurian, Jesil (author)The climate change agreements require large investments in renewable energies. However, with the increasing demand for energy, immediately stopping the production and use of fossil fuels is not realistic. Natural gas is twice as clean as coal and hence could be considered as a transition fuel, which can help to find a balance between the...master thesis 2018
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Hamraz, Ash (author)In Pressurized Thermal Shock (PTS) applications, there is a co-existence of different flow regimes. The regimes can be divided in two main groups namely, dispersed two-phase flows and the separated two-phase flows having relatively larger interface. Simulating a two-phase flow itself is already a complex task. It gets even more complex when the flow...master thesis 2018
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Two-phase vertical downward flow in plate heat exchangers: Flow patterns and condensation mechanismsToa, X. (author), Nuijten, Menno P. (author), Infante Ferreira, C.A. (author)This study presents a literature review of work related to the two-phase flow patterns of vertical downward flow in plate heat exchangers with corrugated chevron plates. An understanding of these flow patterns is crucial for developing accurate models of plate heat exchangers functioning as condensers or absorbers. Flow pattern maps of the...journal article 2018
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Zarikos, I. M. (author), Hassanizadeh, SM (author), van Oosterhout, L. M. (author), van Oordt, W.P. (author)The measurement of fluid pressure inside pores is a major challenge in experimental studies of two-phase flow in porous media. In this paper, we describe the manufacturing procedure of a micro-model with integrated fibre optic pressure sensors. They have a circular measurement window with a diameter of 260 (Formula presented.), which enables...journal article 2018
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Bolder, Robin (author)Two-phase thermal control systems are used for payloads that require temperature stability under high and fluctuating heat output. However, the complex interaction between the two phases in a flow makes it hard to predict the performance of such a system. The goal was to develop a numerical model able to predict the transient behaviour of such a...master thesis 2017
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Poelma, C. (author), Gurung, A. (author)Ultrasound Imaging Velocimetry (UIV, also known as 'echo-PIV') has, since its introduction a decade ago, been regarded as a promising tool to characterize non-transparent flows. Prime application examples are particle-laden flows and (in vivo) blood flow. Virtually all studies so far have been validation/comparison studies in laminar flow. In...conference paper 2016
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Gromotka, Z.J.G. (author)The tubing performance relation curve is a measure of well performance in gas well engineering. It describes the two-phase flow inside a well and as such is modeled as a two-phase one dimensional pipe flow. Convention claims that production points on the TPR curve to the right of its minimum are stable. There also exist claims about the region...master thesis 2015
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Nuijten, M.P. (author)Ocean thermal energy conversion (OTEC) is currently developed as a clean and sustainable energy technology for offshore application in tropical areas. The technology shows promising possibilities in combination with the Kalina cycle, a thermodynamic cycle for the generation of energy from low temperature difference heat sources using a working...master thesis 2015
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Brändle de Motta, J.C. (author), Breugem, W.P. (author), Gazanion, B. (author), Estivalezes, J.L. (author), Vincent, S. (author), Climent, E. (author)A general model is presented for short-range hydrodynamic interactions and head-on particle-particle/wall collisions. The model has been embedded in two distinct numerical methods for fully resolved simulation of finite-size particles in a viscous fluid. It accounts for the material properties of the particles and lubrication effects prior to...journal article 2013
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Meulenbroek, B.J. (author), Farajzadeh, R. (author), Bruining, J. (author)Carbon dioxide injected in an aquifer rises quickly to the top of the reservoir and forms a gas cap from where it diffuses into the underlying water layer. Transfer of the CO2 to the aqueous phase below is enhanced due to the high density of the carbon dioxide containing aqueous phase. This paper investigates the behavior of the diffusive...journal article 2013
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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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De Martin, L. (author), Bouwman, W.G. (author), Van Ommen, J.R. (author)recent years, the interest in fluidization as a mean to process nanoparticles is strongly increasing. Due to the small size of the nanoparticles, which makes van der Waals forces predominate, they do not fluidize as single particles but as agglomerates. Various researchers using settling experiments and bed expansion measurements conclude that...conference paper 2013
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On the fabrication of PDMS micromodels by rapid prototyping, and their use in two-phase flow studiesKaradimitriou, N.K. (author), Musterd, M. (author), Kleingeld, P.J. (author), Kreutzer, M.T. (author), Hassanizadeh, S.M. (author), Joekar-Niasar, V. (author)Micromodels have been increasingly employed in various ways in porous media research, to study the pore-scale behavior of fluids. Micromodels have proven to be a valuable tool by allowing the observation of flow and transport at the micron scale in chemical, biological, and physical applications. They have helped to improve our insight of flow...journal article 2013
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Van Steijn, V. (author), Korczyk, P.M. (author), Derzsi, L. (author), Abate, A.R. (author), Weitz, D.A. (author), Garstecki, P. (author)We introduce a novel type of droplet generator that produces droplets of a volume set by the geometry of the droplet generator and not by the flow rates of the liquids. The generator consists of a classic T-junction with a bypass channel. This bypass directs the continuous fluid around the forming droplets, so that they can fill the space...journal article 2013
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Ooms, G. (author), Pourquie, M.J.B.M. (author), Beerens, J.C. (author)A numerical study has been made of horizontal core-annular flow: the flow of a high-viscosity liquid core surrounded by a low-viscosity liquid annular layer through a horizontal pipe. Special attention is paid to the question how the buoyancy force on the core, caused by a density difference between the core and the annular layer, is...journal article 2013
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Pothof, I.W.M. (author), Clemens, F.H.L.R. (author)Air-water flow is an undesired condition in water pipelines and hydropower tunnels. Water pipelines and wastewater pressure mains in particular are subject to air pocket accumulation in downward sloping reaches, such as inverted siphons or terrain slopes. Air pockets cause energy losses and an associated capacity reduction. Despite its practical...conference paper 2012
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Malekzadeh, R. (author)transportation facilities. In an offshore oil and gas production facility, pipeline-riser systems are required to transport two-phase hydrocarbons from subsurface oil and gas wells to a central production platform. Severe slugs reaching several thousands pipe diameters may occur when transporting gas and liquid in these pipeline-riser systems....doctoral thesis 2012
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Hoang, D.A. (author), Van Steijn, V. (author), Portela, L.M. (author), Kreutzer, M.T. (author), Kleijn, C.R. (author)Modeling of low-Capillary number segmented flows in microchannels is important for the design of microfluidic devices. We present numerical validations of microfluidic flow simulations using the volume-of-fluid (VOF) method as implemented in OpenFOAM. Two benchmark cases were investigated to ensure the reliability of OpenFOAM in modeling complex...conference paper 2012
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Chemmalasseri, E.A. (author)It is common practice to use the inhalation route to deliver medicine in the form of aerosol to treat patients with pulmonary ailments like cystic fibrosis. In pulmonary drug delivery, medicine in the form of small droplets is inhaled by patients and delivered to their lungs. A major challenge faced in developing such devices is that effective...master thesis 2012