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Arnold, M. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author)The optimal operation of an integrated electricity and natural gas infrastructure is investigated. The couplings between the electricity system and the gas system are modeled by so-called energy hubs, which represent the interface between the loads on the one hand and the transmission infrastructures on the other. To increase reliability and...conference paper 2009
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The incompressible flow past a 6:1 prolate spheroid with an inclination angle of 45o at Re = 3,000 has been studied by means of direct numerical simulations (DNS). The Reynolds number is based on the inflow velocity and minor-axis length. The preliminary results presented here are focused mainly on vortex dynamics and vortical structures in the...conference paper 2015
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Particle impaction on a cylinder in a cross flow is investigated with the use of Direct Numerical Simulations (DNS), with a focus on the effect of turbulence on the impaction efficiency. It is found that for particles with Stokes numbers in the boundary stopping mode there is up to ten times more front side impaction for turbulence with a large...conference paper 2015
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We investigated the rotation of non-spherical particles (rod-like and disk-like) in turbulent channel flow with focus on inertial effects. A direct numerical simulation (DNS) with an Eulerian-Lagrangian approach was performed. A wide range of particle aspect ratios, λ, ranging from 0.01 to 50 were considered for Stokes numbers St equal to 1 and...conference paper 2015
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Hug-Glanzmann, G. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author), Hellendoorn, H. (author)As power systems generally are large interconnected systems controlled by several parties, centralized optimal power flow (OPF) control taking the entire grid into account is often not feasible. To use optimal control in power systems nevertheless, the overall system is decomposed into areas with associated subproblems, which are solved in an...conference paper 2007
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Andersson, J.E. (author)Sweden is entering the ageing society. On a national level, and in a cyclic process with a time lap of 30 to 40 years, three architecture competitions have been realized during the 20th century in order to renew spatial thinking concerning housing for dependent and frail persons in need of daily care and caring, in the following termed...conference paper 2014
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Andersson, U. (author), Boman, J. (author)Shortly before the EU summit in Gothenburg in 2001, the University of Gothenburg and Chalmers University of Technology arranged their first international conference in learning for sustainable development, entitled Knowledge and Learning for a Sustainable Society?. At the UN World Summit on Sustainable Development in Johannesburg 2002, Sweden...conference paper 2010
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Narasimhamurthy, V. (author), Schwertfirm, F. (author), Andersson, H. (author), Pettersen, B. (author)Three-dimensional numerical calculations of laminar vortex shedding behind a linearly tapered circular cylinder with taper ratio 75:1 have been carried out at a Reynolds number 131 (based on the large diameter and the uniform inflow velocity) using a Finite Volume code. Computations were performed on a staggered-Cartesian grid and a direct...conference paper 2006
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Arnold, M. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author)The optimal operation of an integrated electricity and natural gas system is investigated. The couplings between these two systems are modeled by energy hubs, which serve as interface between the loads and the transmission infrastructures. Previously, we have applied a distributed control scheme to a static three-hub benchmark system. In this...conference paper 2009
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Andersson, U. (author), Boman, J. (author)For several years, the University of Gothenburg eco-label their courses and programs, as defined in the Swedish Higher Education Act (Chapter 1, Section 5), "In their activities, higher education institution shall promote sustainable development that ensures present and future generations a healthy and good environment, economic and social...conference paper 2010
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Arnold, M. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author)The optimization of combined electricity and natural gas systems is addressed in this paper. The two networks are connected via energy hubs. Using the energy hub concept, the interactions between the different infrastructures can be analyzed. A system consisting of several interconnected hubs forms a distributed power generation structure where...conference paper 2009
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A suspension of oblate spheroidal (disk-like) particles in turbulent channel flow has been investigated with focus on the translational and rotational particle statistics. The effects of particle aspect ratio and inertia have been explored. The disk-like particles exhibited a significant preferential orientation in the plane of the mean shear....conference paper 2015
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Boman, J. (author), Olsson, M. (author), Andersson, U.P. (author)The work to incorporate sustainable development into courses at university level is a complex task. It is therefore a challenge for everyone involved in the teacher training program at any university. At the University of Gothenburg, Gothenburg, Sweden, the main compulsory course involving sustainable development is given during the first...conference paper 2010
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- Figueroa, C.A. (author), Sundqvist, Josephine (author), Mathieu, Sunjoy (author), Farrokhnia, Nasim (author), Nevin, Diane (author), Andersson, Sarah Wamala (author) contribution to periodical 2023
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- Andersson, R.A. (author) doctoral thesis 2008
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- Andersson, Gerd (author) journal article 1968
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Gillissen, J.J.J. (author), Boersma, B.J. (author), Mortensen, P.H. (author), Andersson, H.I. (author)Turbulent fiber suspension channel flow is studied using direct numerical simulation. The effect of the fibers on the fluid mechanics is governed by a stress tensor, involving the distribution of fiber position and orientation. Properties of this function in channel flow are studied by computing the trajectories and orientations of individual...journal article 2007
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Andersson, R. (author), Bouwman, W.G. (author), Luding, S. (author), De Schepper, I.M. (author)Extracting structure and ordering information from the bulk of granular materials is a challenging task. Here we present Spin-Echo Small Angle Neutron Scattering Measurements in combination with computer simulations on a fine powder of silica, before and after uniaxial compression. The cohesive powder packing is modeled by using molecular...journal article 2008
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De Groot, M. (author), Vernooij, M.W. (author), Klein, S. (author), Arfan Ikram, M. (author), Vos, F.M. (author), Smith, S.M. (author), Niessen, W.J. (author), Andersson, J.L.R. (author)Anatomical alignment in neuroimaging studies is of such importance that considerable effort is put into improving the registration used to establish spatial correspondence. Tract-based spatial statistics (TBSS) is a popular method for comparing diffusion characteristics across subjects. TBSS establishes spatial correspondence using a combination...journal article 2013
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Zhao, L. (author), Andersson, H.I. (author), Gillissen, J.J.J. (author)Transfer of mechanical energy between solid spherical particles and a Newtonian carrier fluid has been explored in two-way coupled direct numerical simulations of turbulent channel flow. The inertial particles have been treated as individual point particles in a Lagrangian framework and their feedback on the fluid phase has been incorporated in...journal article 2013
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