Searched for: subject:"Fluid%5C+flow"
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van der Hout, Thomas (author)
Power electronic systems are reaching higher efficiencies as their technology advances, which often results in components of smaller size with higher power densities. Cooling these components becomes increasingly challenging as high power densities require cooling with large heat fluxes. Topology optimization (TO) of thermo-fluids can be used to...
master thesis 2021
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Boersma, Q.D. (author)
Responsibly using the subsurface for geo-energy extraction or storage requires an accurate understanding of the static and dynamic behaviour of the targeted reservoirs. While mostly dependent on intrinsic rock properties (e.g. porosity and permeability), this behaviour is also believed to be significantly impacted by the presence of natural...
doctoral thesis 2020
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Donders, Tim (author)
Welding is an extensively used technology by different industries such as aerospace, automotive and marine industry. Welding involves the temporal melting of materials in order to join them together. The quality of the weld is known to depend on the fluid flow and heat transfer in the material. A way to influence the heat transfer and fluid flow...
bachelor thesis 2020
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Prades, Lledó (author), Fabbri, Stefania (author), Dorado, Antonio D. (author), Gamisans, Xavier (author), Stoodley, Paul (author), Picioreanu, C. (author)
Experimental data showed that high-speed microsprays can effectively disrupt biofilms on their support substratum, producing a variety of dynamic reactions such as elongation, displacement, ripple formation, and fluidization. However, the mechanics underlying the impact of high-speed turbulent flows on biofilm structure is complex under such...
journal article 2020
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Dash, A. (author), Anantharaman, Arjun (author), Poelma, C. (author)
We extend upon the known flow transitions in neutrally buoyant particle-laden Taylor-Couette flows by accessing higher suspension Reynolds numbers in a geometry with radius ratio and aspect ratio. Flow transitions for several particle volume fractions () are investigated by means of flow visualization experiments, in a flow driven by a...
journal article 2020
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Terleth, Niels (author)
Due to their powerful approximation capabilities, artificial neural networks have seen a wide interest in various fields. A particular application is the use of an artificial neural network to predict solutions of the governing equations for fluid flow i.e. the Navier-Stokes equations. This is done by taking the space and time variables as the...
master thesis 2019
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De Geyndt, Wouter (author)
With growing interest in wet adhesion, animals such as tree frogs are often used as paradigm for creating grippers in wet environments. Tree frogs are capable of attaching to surfaces under several conditions (smooth, rough, dry, wet, and flooded) due to the microstructure of their toe pads. This microstructure consists of pillar-shaped...
master thesis 2019
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Panda, Subhranshu (author)
Passive measures to tackle increasing energy demands of modern buildings are aimed to generate energy from the roof or the ground beneath and by improving insulation to isolate indoors and outdoors. The author targets the opaque facade sections of a building to develop an active panel to exchange solar thermal energy with his project THERM...
master thesis 2019
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Chakkingal, M. (author), Kenjeres, S. (author), Ataei Dadavi, I. (author), Tummers, M.J. (author), Kleijn, C.R. (author)
We report numerical simulations of fluid natural convection with conjugate heat transfer in a bottom-heated, top-cooled cubical cavity packed with relatively large (d/L=0.2) solid spheres in a Body Centred Tetragonal (BCT) configuration. We study largely varying solid-to-fluid thermal conductivity ratios between 0.3 and 198, for a fluid...
journal article 2019
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Schutte, K.C.J. (author), Portela, L. (author), Twerda, A. (author), Henkes, R.A.W.M. (author)
We have developed and applied an Eulerian-Lagrangian model for the transport, formation, break-up, deposition and re-entrainment of particle agglomerates. In this paper, we focus on agglomeration and break-up. Simulations were carried out to investigate what changes in the turbulent flow are inflicted by the presence of the agglomerates. Also...
journal article 2018
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Pacha Sanjeevi, S.K. (author), Padding, J.T. (author)
The flow around different prolate (needle-like) and oblate (disc-like) spheroids is studied using a multi-relaxation-time lattice Boltzmann method. We compute the mean drag coefficient CD,ϕ at different incident angles ϕ for a wide range of Reynolds numbers ( Re ). We show that the sine-squared drag law CD,ϕ=CD,ϕ=0∘+(CD,ϕ=90∘−CD,ϕ=0∘)sin2ϕ holds...
journal article 2017
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Kunnen, S.J. (author), Leonhard, W.N. (author), Semeins, C. (author), Hawinkels, L.J.A.C. (author), Poelma, C. (author), ten Dijke, P. (author), Bakker, A. (author), Hierck, B.P. (author), Peters, D.J.M. (author)
Renal tubular epithelial cells are exposed to mechanical forces due to fluid flow shear stress within the lumen of the nephron. These cells respond by activation of mechano-sensors located at the plasma membrane or the primary cilium, having crucial roles in maintenance of cellular homeostasis and signaling. In this paper, we applied fluid shear...
journal article 2017
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Ebrahimi, Amin (author), Naranjani, Benyamin (author), Milani, Shayan (author), Dadras Javan, Farzad (author)
Heat and fluid flow in a rectangular channel heat sink equipped with longitudinal vortex generators have been numerically investigated in the range of Reynolds numbers between 25 and 200. Aqueous solutions of carboxymethyl cellulose (CMC) with different concentrations (200–2000 ppm), which are shear-thinning non-Newtonian liquids, have been...
journal article 2017
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Kavian, M. (author), Slob, E.C. (author), Mulder, W.A. (author)
We measured the electric parameters for four different configurations of unconsolidated homogeneous and layered sands as a function of frequency, water saturation, and salinity under fluid flow conditions. Our objective is to determine if the effect of heterogeneities at scales much smaller than the skin depth can be captured by introducing...
journal article 2011
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Talebian, M. (author), Al-Khoury, R.I.N. (author), Sluys, L.J. (author)
This paper presents an efficient computational model for the simulation of fully coupled two-phase flow in a deformed partially saturated formation. Focus is placed on modeling the flow of a CO2 plume in a porous medium. The numerical procedure is based on coupling between the Level-set method (LS) and the extended finite element method (XFEM)....
conference paper 2011
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Zhao, C. (author)
Understanding the fluid flow in weld pools contributes significantly toward controlling the heat distribution in the base material and the mass distribution of molten base and additive materials. Currently, most investigations focus primarily on numerical models, due to the experimental difficulties associated with the challenging environment in...
doctoral thesis 2011
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Opdam, R.C.G. (author)
In this bachelor thesis, blood flow in simplified stenosed and unstenosed arteries under influence of a steady localized non-uniform magnetic field is investigated by performing 3D numerical simulations. The mathematical model is a combination of the principles of ferrohydrodynamics (FHD), magnetohydrodynamics (MHD) and a simplified set of...
bachelor thesis 2008
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Kreeft, J.J. (author)
Multi-fluid flows are found in many applications in engineering and physics. Examples of these flows from engineering are water-air flows in ship hydrodynamics, exhaust-air flows behind rockets, gas-petrolea flows in upstream pipes of oilrigs, air-fuel bubble interaction flows in scramjets and many others. To gain better insight in the behavior...
master thesis 2007
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Poesio, P. (author), Ooms, G. (author)
journal article 2007
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Naber, J. (author), Koren, B. (author)
In this work a numerical method for the solution of the two-dimensional Euler equations describing unsteady compressible two-fluid flow is presented. The method is based on the combination of a Runge-Kutta discontinuous Galerkin discretization of the Euler equations and a level-set method for the treatment of the two-fluid interface. The...
conference paper 2006
Searched for: subject:"Fluid%5C+flow"
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