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Schalkers, M.A. (author), Möller, M. (author)In recent years, quantum Boltzmann methods have gained more and more interest as they might provide a viable path toward solving fluid dynamics problems on quantum computers once this emerging compute technology has matured and fault-tolerant many-qubit systems become available. The major challenge in developing a start-to-end quantum...journal article 2024
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Manchester, Emily Louise (author), Pirola, S. (author), Pirola, Sergio (author), Mastroiacovo, Giorgio (author), Polvani, Gianluca (author), Pontone, Gianluca (author), Xu, Xiao Yun (author)Aortic valve disease is often treated with bioprosthetic valves. An alternative treatment is aortic valve neocuspidization which is a relatively new reparative procedure whereby the three aortic cusps are replaced with patient pericardium or bovine tissues. Recent research indicates that aortic blood flow is disturbed, and turbulence effects...journal article 2024
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Blöbaum, Luisa (author), Haringa, C. (author), Grünberger, Alexander (author)Bioprocesses are scaled up for the production of large product quantities. With larger fermenter volumes, mixing becomes increasingly inefficient and environmental gradients get more prominent than in smaller scales. Environmental gradients have an impact on the microorganism's metabolism, which makes the prediction of large-scale performance...review 2023
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Nieuwboer, B.J. (author), van Rhee, C. (author), Keetels, G.H. (author)When dredging rock using a Cutter Suction Dredger the high amount of spillage is problematic, since it prevents an energy efficient removal process. This papers presents a coupled DEM-FVM method to simulate spillage, that can be used for optimizing the design and working method of the Cutter Suction Dredger. In these simulations, the challenge...journal article 2023
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Kühn, Martin J. (author), Holke, Johannes (author), Lutz, Annette (author), Thies, J. (author), Röhrig-Zöllner, Melven (author), Bleh, Alexander (author), Backhaus, Jan (author), Basermann, Achim (author)Developments in numerical simulation of flows and high-performance computing influence one another. More detailed simulation methods create a permanent need for more computational power, while new hardware developments often require changes to the software to exploit new hardware features. This dependency is very pronounced in the case of...journal article 2023
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Hut, T.Y. (author), Roest, Arno (author), Gaillard, D.H.K. (author), Hazekamp, Mark (author), Van Den Boogaard, Pieter (author), Lamb, Hildo (author), Jongbloed, Monique (author), Rijnberg, Friso (author), Kenjeres, S. (author)Objectives: Recent evidence suggests that conduits implanted in Fontan patients at the age of 2-4 years become undersized for adulthood. The objective of this study is to use computational fluid dynamic models to evaluate the effect of virtual expansion of the Fontan conduit on haemodynamics and energetics of the total cavopulmonary...journal article 2023
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Rijnberg, Friso M. (author), van ‘t Hul, Luca C. (author), Hazekamp, Mark G. (author), van den Boogaard, Pieter J. (author), Juffermans, Joe F. (author), Lamb, Hildo J. (author), Kenjeres, S. (author), le Cessie, Saskia (author), Jongbloed, Monique R.M. (author)OBJECTIVES: To date, it is not known if 16–20-mm extracardiac conduits are outgrown during somatic growth from childhood to adolescence. This study aims to determine total cavopulmonary connection (TCPC) haemodynamics in adolescent Fontan patients at rest and during simulated exercise and to assess the relationship between conduit size and...journal article 2023
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Bhadra, A. (author), Haverkort, J.W. (author)Microfluidic fuel cells, electrolyzers, and redox flow batteries utilize laminar flow channels to provide reactants, remove products and avoid their crossover. These devices often also employ porous flow-through electrodes as they offer a high surface area for the reaction and excellent mass transfer. The geometrical features of these...journal article 2023
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Nijssen, Tim M.J. (author), Padding, J.T. (author), Ottens, M. (author)The hydrodynamics of the Expanded Bed Adsorption process is studied through simulations combining Computational Fluid Dynamics and the Discrete Element Method. A representative base case is defined, based on process design parameters commonly encountered in literature. Then, 19 other cases are defined, each representing a singular adjustment...journal article 2023
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Boatto, Umberto (author), Bonnet, Paul A. (author), Avallone, F. (author), Ragni, D. (author)Blade Element Momentum Theory (BEMT) -based approaches provide 15%–20% inaccurate load predictions under uniform steady inflow. Inaccuracies were related to unclear aerodynamic mechanisms causing the Prandtl Tip-Root Loss (TRL) correction to fail at high Tip-Speed Ratio (TSR) and the ambiguous drag coefficient treatment under Stall Delay (SD)...journal article 2023
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Otori, Hiromasa (author), Kikuchi, Yuka (author), Rivera Arreba, I. (author), Viré, A.C. (author)The hydrodynamic coefficients are evaluated by fully nonlinear Navier-Stokes forced oscillation simulations using the volume of fluid method. Richardson extrapolation is employed to obtain the grid-independent solution. The predicted hydrodynamic coefficients are validated by the water tank tests. The applicability of the drag coefficient...journal article 2023
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Giagnorio, Mattia (author), Tanis, M.B. (author), Hélix-Nielsen, Claus (author), Aschmoneit, Fynn Jerome (author)In forward osmosis, defects on the selective active layer and changes in the porous structure of the support layer can be detrimental factors affecting the membrane performance. This study focuses on the impacts of (i) the possible presence of defects and (ii) the changes in pore structures on the water flux and membrane selectivity via...journal article 2023
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Schoenborn, S. (author), Lorenz, T. (author), Kuo, K. (author), Fletcher, D. F. (author), Woodruff, M. A. (author), Pirola, S. (author), Allenby, M. C. (author)Vascular compliance is considered both a cause and a consequence of cardiovascular disease and a significant factor in the mid- and long-term patency of vascular grafts. However, the biomechanical effects of localised changes in compliance cannot be satisfactorily studied with the available medical imaging technologies or surgical simulation...journal article 2023
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Hosseini, A. (author), Dhiman, Vinod (author), Meijer, Koen (author), Zeilstra, Christiaan (author), Hage, Johannes (author), Peeters, Tim (author), Offerman, S.E. (author), Yang, Y. (author)A three-dimensional computational fluid dynamics (CFD) model for the HIsarna off-gas system is set up and validated by real plant data. In the model detailed reaction mechanism and kinetic data for post-combustion of CO-H2 mixture and carbon particles are incorporated. The results are presented and discussed in another study (Part 1) by the...journal article 2022
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Estrado, Erron (author), Turrin, M. (author), Eigenraam, P. (author)As technology advances, architects often employ innovative, non-standard shapes in their designs for the fast-growing number of high-rise buildings. Conversely, climate change is bringing about an increasing number of dangerous wind events causing damage to buildings and their surroundings. These factors further complicate the already...journal article 2022
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Yuan, S. (author), Cai, Jitao (author), Reniers, G.L.L.M.E. (author), Yang, M. (author), Chen, Chao (author), Wu, Jiansong (author)Toxic gas leakage represents a type of major process accident scenario threatening human life. Technical and non-technical safety barriers are employed to prevent toxic gas leakage accidents or mitigate the possible catastrophic consequences. Evacuation must be executed in severe toxic gas release scenarios. The performance assessment of...journal article 2022
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Cai, Jitao (author), Wu, Jiansong (author), Yuan, S. (author), Kong, Desheng (author), Zhang, Xiaole (author)Natural gas compartment accommodated in utility tunnels is beneficial in meeting the pressing demand of energy supply and sustainable urban environment. However, the leaking gas characterized by flammable and explosive can pose a huge threat to the safe operation of the utility tunnel. When an unexpected gas leakage accident happens in the...journal article 2022
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Perinajová, R. (author), Juffermans, J.F. (author), Mercado, Jonhatan Lorenzo (author), Aben, Jean Paul (author), Ledoux, Leon (author), Westenberg, Jos J.M. (author), Lamb, Hildo J. (author), Kenjeres, S. (author)In this study, we analyzed turbulent flows through a phantom (a 180<sup>∘</sup> bend with narrowing) at peak systole and a patient-specific coarctation of the aorta (CoA), with a pulsating flow, using magnetic resonance imaging (MRI) and computational fluid dynamics (CFD). For MRI, a 4D-flow MRI is performed using a 3T scanner. For CFD, the...journal article 2021
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Lu, Suli (author), Liu, Jialun (author), Hekkenberg, R.G. (author)A good mesh is a prerequisite for achieving reliable results from Computational Fluid Dynamics (CFD) calculations. Mesh properties include mesh types, computational domain sizes, and node distributions. However, in literature, we found no clear consensus about what these properties should be. In this article, we performed a case study on ship...journal article 2021
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Wu, X. (author), Gurzing, S.D. (author), Schinkel, C.V. (author), Toussaint, Merel (author), Perinajová, R. (author), van Ooij, Pim (author), Kenjeres, S. (author)Introduction: Wall shear stress (WSS) is associated with the growth and rupture of an intracranial aneurysm. To reveal their underlying connections, many image-based computational fluid dynamics (CFD) studies have been conducted. However, the methodological validations using both in vivo medical imaging and in vitro optical flow measurements...journal article 2021