Searched for: subject%3A%22flows%22
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Brill, Patrick (author)
To improve the safety of commercial air transport, pilots are required to train on simulators to recognize the characteristics of an impeding stall and subsequently correctly recover from it. To prevent negative training, it is important that the accuracy of the used simulation models is high. A manner to model the nonlinear, unsteady...
master thesis 2023
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Shariati, Vahid (author), Roohi, Ehsan (author), Ebrahimi, Amin (author)
The direct simulation Monte Carlo (DSMC) method, which is a probabilistic particle-based gas kinetic simulation approach, is employed in the present work to describe the physics of rarefied gas flow in super nanoporous materials (also known as mesoporous). The simulations are performed for different material porosities (0.5≤ϕ≤0.9), Knudsen...
journal article 2023
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Santos, Gonçalo Gonçalves Duarte (author), Birolini, Sebastian (author), Correia, Gonçalo (author)
Shared automated vehicles are expected to be part of the supply of transportation systems in the future. Parallel to this evolution, there is the rapid penetration of battery electric vehicles (BEVs). The limitations in battery capacity and charging speed of BEVs can influence the planning and operation of shared automated electric vehicle (SAEV...
journal article 2023
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Zhang, Yu (author), Dong, Y. (author)
The platform carrying capacity of urban rail transit stations is limited and overcrowding of the platform will lead to serious safety risks for passengers and trains. It is significant to collaborate on the optimization of passenger flow strategy and skip-stopping scheme to alleviate traffic pressure and ensure platform safety. This study...
poster 2023
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Liaudat, J. (author), Dieudonné, A.A.M. (author), Vardon, P.J. (author)
Geological Disposal Facilities (GDF) for radioactive waste will generally rely on clay-rich materials as a host geological formation and/or engineered barrier. Gas will be produced within the GDF, which can build up significant gas pressure and will activate the migration of gas through the clay materials via different transport mechanisms....
journal article 2023
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El Hasadi, Yousef M.F. (author), Padding, J.T. (author)
At the beginning of the second half of the twentieth century, Proudman and Pearson (J. Fluid. Mech.,2(3), 1956, pp.237–262) suggested that the functional form of the drag coefficient (C<sub>D</sub>) of a single sphere subjected to uniform fluid flow consists of a series of logarithmic and power terms of the Reynolds number (Re). In this paper...
journal article 2023
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Bernardini, Matteo (author), Modesti, D. (author), Salvadore, Francesco (author), Sathyanarayana, Srikanth (author), Della Posta, Giacomo (author), Pirozzoli, Sergio (author)
We present STREAmS-2.0, an updated version of the flow solver STREAmS, first introduced in Bernardini et al. (2021) [1]. STREAmS-2.0 has an object-oriented design which separates the physics equations from the specific back-end, making the code more suitable for future expansions, such as porting to novel computing architectures or...
journal article 2023
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Ni, Ying (author), Li, Y. (author), Yuan, Y. (author), Sun, Jian (author)
In recent years, the interest in riding in cities using the two-wheeler (e.g., bicycles, electric bicycles, electric mopeds, etc.) increases. Mixed-traffic road segments are one of the most common traffic scenes where the mixed two-wheeler flows exist. Because the movements are often not restricted by lanes, the two-wheeler uses lateral road...
journal article 2023
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Sarker, D. (author), Schinkel, C.V. (author), Portela, L. (author)
This study reports the effect of N<sub>2</sub> and CO<sub>2</sub> bubbles on dilute to dense gas-liquid two-phase bubbly flow. A shadowgraph imaging technique captured bubble images at a high spatiotemporal resolution. The recordings of bubble images allow us to compute gas fraction distribution. It requires challenging segmentation and gas...
journal article 2023
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Akyüz, M. Hakan (author), Dekker, Rommert (author), Sharif Azadeh, S. (author)
The exclusive and excessive use of long-distance road transportation is not suitable way to reduce the negative environmental impacts of logistics systems. Intermodal transport, combining road with other transport modes, has the potential to reduce both operating costs and carbon footprints. One of the reasons for the low share of intermodal...
journal article 2023
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van Oorschot, Janneke (author), Sprecher, B. (author), Rijken, Bart (author), Witteveen, Pieter (author), Blok, Merlijn (author), Schouten, Nico (author), van der Voet, Ester (author)
Buildings are an important part of society's environmental impacts, both in the construction and in the use phase. As the energy performance of buildings improve, construction materials become more important as a cause of environmental impact. Less attention has been given to those materials. We explore, as an alternative for conventional...
journal article 2023
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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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Shi, Rui (author), Wüthrich, D. (author), Chanson, Hubert (author)
Continuing from the part 1 (Shi et al., 2022) this paper presents an experimental investigation of transient void fraction and bubble statistics in a highly turbulent breaking bore with Fr<sub>1</sub>=2.4. The measurements were conducted using a combination of dual-tip phase-detection probes and an ultra-high-speed video camera. The enclosed...
journal article 2023
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Shi, Rui (author), Wüthrich, D. (author), Chanson, Hubert (author)
Transient motion, turbulence and bubble dynamics make any velocity quantification extremely difficult in unsteady gas–liquid flows. In the present study, novel Eulerian and Lagrangian techniques of velocimetry were developed, using both intrusive and non-intrusive measurements. The selected unsteady gas–liquid flow was a breaking bore,...
journal article 2023
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Koshakji, Anwar (author), Chomette, Grégoire (author), Turner, Jeffrey (author), Jablonski, Jonathan (author), Haynes, Aisha (author), Carlucci, Donald (author), Giovanardi, Bianca (author), Radovitzky, Raúl A. (author)
The dynamic response of flexible filaments immersed in viscous fluids is important in cell mechanics, as well as other biological and industrial processes. In this paper, we propose a parallel computational framework to simulate the fluid-structure interactions in large assemblies of highly-flexible filaments immersed in a viscous fluid. We...
journal article 2023
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Marynets, K. (author)
We present recent results in study of a mathematical model of the Sea-Breeze flow, arising from a general model of the ‘morning glory’ phenomena. Based on analysis of the Dirichlet spectrum of a corresponding Sturm-Liouville problem and application of the Fredholm alternative, we establish conditions of existence/uniqueness of solutions to...
journal article 2023
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Giovanardi, M. (author), Konstantinou, T. (author), Pollo, Riccardo (author), Klein, T. (author)
Traceability is considered a crucial requirement to enable Circular Economy (CE). Product and process life-cycle data can facilitate circular asset management preserving the asset's value over time and reducing resource consumption. Many scholars point out how the loss of traceability data, lacking information reliability, and unstructured...
journal article 2023
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Sui, Xinxin (author), van de Ven, F.H.M. (author)
Low Impact Development (LID) was promoted as an alternative to conventional urban drainage methods. The effects of LID at the site or urban scales have been widely evaluated. This project aims to investigate the impact of LID implementation on basin runoff at a regional scale in a half-urbanized catchment, particularly the overlap of urban...
journal article 2023
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van der Eijk, M. (author), Wellens, P.R. (author)
The numerical prediction of two-phase flows with an interface is challenging, to a considerable extent because of the high density ratio at the interface. Numerical results become affected by momentum losses, diverging spurious interface velocities, free surface distortion, and even numerical instability. To prevent issues like these,...
journal article 2023
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Wang, Yixia (author), Lin, Shu (author), Wang, Yibing (author), De Schutter, B.H.K. (author), Xu, Jungang (author)
Currently, with the development of driving technologies, driverless vehicles gradually are becoming more and more available. Therefore, there would be a long period of time during which self-driving vehicles and human-driven vehicles coexist. However, for a mixed platoon, it is hard to control the formation due to the existence of the manual...
journal article 2023
Searched for: subject%3A%22flows%22
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