Searched for: subject:"computational%5C+fluid%5C+dynamics"
(61 - 80 of 111)

Pages

document
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
document
De Jaeger, P. (author), T'Joen, C. (author), Huisseune, H. (author), Ameel, B. (author), De Paepe, M. (author)
The physical behavior of open-cell foams depends on their microscopic structure. An open-cell geometrical model is proposed, which can serve as the basis for a future macroscopic analysis. The strut geometry is of particular interest, as it is reported to have substantial influence on the occurring thermo-hydraulic and mechanical phenomena....
journal article 2011
document
Markesteijn, A.P. (author)
One of the most important developments in the last centuries is the process of miniaturisation and understanding everything that it entails. For the physical sciences this meant the continuing discovery what matter is and how it behaves, while from a practical point of view it meant that more advanced medical, scientific, and consumer...
doctoral thesis 2011
document
Van Hooff, T. (author), Blocken, B. (author), Aanen, L. (author), Bronsema, B. (author)
Wind tunnel experiments and Computational Fluid Dynamics (CFD) are used to analyse the flow conditions in a venturi-shaped roof, with focus on the underpressure in the narrowest roof section (contraction). This underpressure can be used to partly or completely drive the natural ventilation of the building zones. The wind tunnel experiments are...
journal article 2011
document
Kritzinger, H.P. (author)
The Monolithic Stirrer Reactor (MSR) is a novel concept for heterogeneously catalyzed reactors and is presented as an alternative device to slurry reactors. It uses a modified stirrer on which structured catalyst supports (monoliths) are fixed to form permeable blades. The monoliths consist of small square parallel channels on which a layer of...
doctoral thesis 2011
document
Vuik, V. (author)
Hydraulic structures are present in the designs of different Room for the River projects in the Netherlands. Examples are longitudinal weirs, groins, summer dikes and weirs in the inlet of a side channel. Morphological simulations with Delft3D are frequently carried out to investigate the effect of such projects on for example hindrance for...
master thesis 2010
document
Loeven, G.J.A. (author)
When modeling physical systems, several sources of uncertainty are present. For example, variability in boundary conditions like free stream velocity or ambient pressure are always present. Furthermore, uncertainties in geometry arise from production tolerances, wear or unknown deformations under loading. Uncertainties in computational fluid...
doctoral thesis 2010
document
Bos, F.M. (author)
Both biological and engineering scientist have always been intrigued by the flight of insects and birds. For a long time, the aerodynamic mechanism behind flapping insect flight was a complete mystery. Recently, several experimental and numerical flow visualisations were performed to investigate the aerodynamics around flapping wings. Flapping...
doctoral thesis 2010
document
Loeven, G.J.A. (author), Bijl, H. (author)
In this paper a Two-Step approach is presented for uncertainty quantification for expensive problems with multiple uncertain parameters. Both steps are performed using the Probabilistic Collocation method. The first step consists of a sensitivity analysis to identify the most important parameters of the problem. The sensitivity derivatives are...
journal article 2009
document
Carpentieri, G. (author)
This thesis presents a shape optimization framework for problems that are encountered routinely in Aerodynamic Design. The nature of the framework is numerical. Its focus is wide as different aspects of the shape optimization practice are treated, e.g., the solution of the flow equations, the sensitivity analysis and the parameterization of the...
doctoral thesis 2009
document
Van Zuijlen, A.H. (author), Bijl, H. (author)
Computational fluid-structure interaction is most commonly performed using a partitioned approach. For strongly coupled problems sub-iterations are required, increasing computational time as flow and structure have to be resolved multiple times every time step. Many sub-iteration techniques exist that improve robustness and convergence, although...
conference paper 2009
document
Ip, Y.Y. (author)
Met als bijlage: A0 poster. In dit afstuderen wordt een onderzoek gedaan naar de invloeden van openingen dwars door een gebouw op de windbelasting. De informatie die uit de resultaten voortkomen dienen als hulpmiddel voor de bouwkundige ontwerpers. Wanneer bouwkundige ontwerpers informatie beschikken over de invloeden van gebouwvormen op de wind...
master thesis 2008
document
Witteveen, J.A.S. (author), Bijl, H. (author)
A monomial chaos approach is presented for efficient uncertainty quantification in nonlinear computational problems. Propagating uncertainty through nonlinear equations can be computationally intensive for existing uncertainty quantification methods. It usually results in a set of nonlinear equations which can be coupled. The proposed monomial...
journal article 2008
document
Shao, L. (author)
Advanced Oxidation Processes (AOPs) are innovative, cost-effective, catalyzed chemical oxidation processes for treating pollutants in low or high concentration from contaminated soil, sludge and water. The common used AOPs in drinking water treatment include UV/H2O2 process, UV/Ozone Process, UV/Titanium Dioxide and Fenton’s Reagent. AOPs are...
master thesis 2007
document
Lisandrin, P. (author)
doctoral thesis 2007
document
Tabor, G. (author), Tame, D. (author), Pierron, F. (author), Young, P.G. (author), Watkinson, A. (author), Thompson, J. (author)
Biomedical flow problems tend to involve domains which are geometrically complex over a range of scales. Much effort has gone into developing tools for generating computational meshes automatically from medical scan data (MRI, CT), allowing the easy creation of patient-specific models of the flow domain, and hence the investigation of flow under...
conference paper 2006
document
Yao, J. (author), Patel, M.K. (author), Yao, Y. (author), Mason, P.J. (author)
Numerical simulation has been conducted for the investigation of heat transfer in a rectangular, high–aspect ratio microchannel with heat sinks, similar to an experimental study. Water at ambient temperature is used as working fluid and the heating power of 180 W is introduced via electronic cartridges in the solids. Three channel heights of 0.3...
conference paper 2006
document
Aglave, R.H. (author), Warnatz, J. (author)
Detailed mechanisms describing ignition, flame propagation and pollutant formation typically involve several hundred species and elementary reactions, prohibiting their use in practical three-dimensional engine simulations. Conventionally reduced mechanisms often fail to predict minor radicals and pollutant precursors. The ILDM-method is an...
conference paper 2006
document
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
document
Verstraete, T. (author), Alsalihi, Z. (author), Van den Braembussche, R.A. (author)
A Conjugate Heat Transfer (CHT) analysis allows the calculation of the heat transfer and temperature of a body placed in a fluid. The CHT analysis takes into account both the conduction in the solid and the convection in the fluid. Present paper describes a CHT method that uses two separate solvers: one CFD solver dedicated to the flow...
conference paper 2006
Searched for: subject:"computational%5C+fluid%5C+dynamics"
(61 - 80 of 111)

Pages