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Li, H. (author), Pourquie, M.J.B.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author)DNS and RANS simulations were carried out for core-annular flow in a horizontal pipe and results were compared with experiments carried out with water and oil in our lab. In contrast to most existing studies for core-annular flow available in the literature, the flow annulus is not laminar but turbulent. This makes the simulations more...journal article 2024
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Li, H. (author), Pourquie, M.J.B.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author)The Reynolds-Averaged Navier Stokes (RANS) with the Launder & Sharma low-Reynolds number k−ε model was used to simulate core-annular flow in the same configuration with vertical upflow as considered by Kim & Choi (2018), who carried out Direct Numerical Simulations (DNS), and by Vanegas Prada (1999), who performed experiments. The DNS...journal article 2023
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Ooms, G. (author), Pourquie, M.J.B.M. (author), Tam, D.S.W. (author)A three-dimensional (3D) numerical simulation was performed using a combined stroke swimmer (deformable sphere) in an incompressible fluid of an infinite domain. The time-dependent deformation of the swimmer surface was assumed independent of the circumferential cross section in the flow direction of the swimmer. The 3D numerical simulation...journal article 2022
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Li, H. (author), Pourquie, M.J.B.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author)Interfacial waves in core-annular pipe flow are studied through two-phase numerical simulations. Here the water annulus is turbulent, whereas the oil core stays laminar. The low-Reynolds number Launder & Sharma k−ε model is applied. By extracting the moving wave shape from the two-phase results and imposing this as a solid boundary in a...journal article 2022
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Li, H. (author), Pourquie, M.J.B.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author)1D, 2D and 3D numerical simulations were carried out with the Reynolds-Averaged Navier-Stokes equations (RANS) for horizontal oil-water core-annular flow in which the oil core stays laminar while the water layer is turbulent. The turbulence is described with the Launder-Sharma low-Reynolds number k−ϵ model. The simulation results are compared...journal article 2021
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Jiang, J. (author), Li, H. (author), Pourquie, M.J.B.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author)Core-annular flow is an efficient way of transporting viscous oil through a pipeline. A sharp increase in the pressure drop will occur when the oil waves at the water-oil interface touch the pipe wall. Depending on the oil and pipe material physical properties, the oil may adhere to the wall leading to fouling. Therefore, a necessary...journal article 2021
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Rawat, Digvijay S. (author), Pourquie, M.J.B.M. (author), Poelma, C. (author)Computational fluid dynamics (CFD) is a powerful method to investigate aneurysms. The primary focus of most investigations has been to compute various hemodynamic parameters to assess the risk posed by an aneurysm. Despite the occurrence of transitional flow in aneurysms, turbulence has not received much attention. In this article, we...journal article 2019
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Goyens, J. (author), Pourquie, M.J.B.M. (author), Poelma, C. (author), Westerweel, J. (author)The vestibular system in the inner ear senses angular head manoeuvres by endolymph fluid which deforms a gelatinous sensory structure (the cupula). We constructed computer models that include both the endolymph flow (using CFD modelling), the cupula deformation (using FEM modelling), and the interaction between both (using fluid–structure...journal article 2019
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Eisma, H.E. (author), Tomas, J.M. (author), Pourquie, M.J.B.M. (author), Elsinga, G.E. (author), Jonker, H.J.J. (author), Westerweel, J. (author)Simultaneous particle-image velocimetry and laser-induced fluorescence combined with large-eddy simulations are used to investigate the flow and pollutant dispersion behaviour in a rural-to-urban roughness transition. The urban roughness is characterized by an array of cubical obstacles in an aligned arrangement. A plane fence is added one...journal article 2018
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Tomas, J.M. (author), Eisma, H.E. (author), Pourquie, M.J.B.M. (author), Elsinga, G.E. (author), Jonker, H.J.J. (author), Westerweel, J. (author)Both large-eddy simulations (LES) and water-tunnel experiments, using simultaneous stereoscopic particle image velocimetry and laser-induced fluorescence, have been used to investigate pollutant dispersion mechanisms in regions where the surface changes from rural to urban roughness. The urban roughness was characterized by an array of...journal article 2017
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Ingen Housz, E.M.R.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author), Pourquie, M.J.B.M. (author), Kidess, A. (author), Radhakrishnan, R. (author)An experimental and numerical study has been made of oil-water core-annular flow in a horizontal pipe with special attention for the turbulence in the water. An experimental set-up was built to be able to compare numerical predictions with detailed experimental results. The oil density was considerably smaller than the water density. Full 3D and...journal article 2017
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Tomas, J.M. (author), Pourquie, M.J.B.M. (author), Jonker, H.J.J. (author)Large-eddy simulations (LES) are used to investigate the effect of stable stratification on rural-to-urban roughness transitions. Smooth-wall turbulent boundary layers are subjected to a generic urban roughness consisting of cubes in an in-line arrangement. Two line sources of pollutant are added to investigate the effect on pollutant dispersion...journal article 2016
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Tomas, J.M. (author), Pourquie, M.J.B.M. (author), Jonker, H.J.J. (author)Predicting pollutant dispersion in urban environments requires accurate treatment of obstacle geometry, inflow turbulence and temperature differences. This paper considers both the influence of thermal stratification and the presence of a single obstacle on pollutant dispersion in turbulent boundary layers (TBLs). Turbulent flow over a fence...journal article 2015
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Schot, J.J.A. (author), Pennings, P.C. (author), Pourquie, M.J.B.M. (author), Van Terwisga, T.J.C. (author)In this paper modelling assumptions for the prediction of tip vortex flow and vortex cavitation with the RANS equations and homogeneous fluid approach in Open-FOAM are presented. The effects of the changes in the turbulence model are investigated and the results are compared with PIV measurements.conference paper 2014
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Beerens, J.C. (author), Ooms, G. (author), Pourquie, M.J.B.M. (author), Westerweel, J. (author)high-viscosity liquid core surrounded by a laminar low-viscosity liquid annular layer through a vertical pipe. The numerical results are compared with theoretical results from linear stability calculations and with experimental data. The comparison is good and the general conclusion of our study is that it is very well possible to simulate...journal article 2014
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Fan, L. (author), Pourquie, M.J.B.M. (author), Thattai, A. (author), Verkooijen, A.H.M. (author), Aravind, P.V. (author)Mathematical modeling tools are useful for predicting the safe operation limits and efficiencies of SOFCs. For a particular SOFC design, variations in internal methane reforming kinetic parameters is expected to affect local gas compositions, local Nernst voltages, current densities and temperature profiles and in turn the safe operation limits...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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- Pourquié, M.J.B.M. (author) doctoral thesis 1994
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- Pourquié, M.J.B.M. (author) doctoral thesis 1994