Searched for: subject%3A%22capillary%22
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van den Brink, Mark (author)
Capillary barrier systems (CBSs) have been demonstrated to be effective in deviating infiltration in a landfill cover. However, their performance when combined with a cover soil optimised for methane oxidation had not been tested in the field yet. This study aimed to describe the water balance of a test field where such a configuration was built...
master thesis 2023
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Manna, Kris (author)
This master thesis introduces a recently surfaced method to produce hydrogen and oxygen using alkaline water electrolysis. A hydrophilic porous diaphragm is used that can feed electrolyte laterally to two porous electrodes that are placed against it. Consequently, hydrogen and oxygen are produced directly at the electrodes without any bubble...
master thesis 2023
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Hubregtse, Ninah (author)
Energy consumption has become a significant global issue due to climatic and environmental challenges, a lack of energy resources, and rising energy prices. The building stock accounts for 40% of the total energy consumption. Therefore, efforts should be made to explore possibilities to reduce energy consumption and related CO2-emissions, not...
master thesis 2023
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Ma, Yuwei (author), Gong, Jihao (author), Ye, G. (author), Fu, Jiyang (author)
The high autogenous shrinkage of alkali-activated fly ash/slag (AASF) poses a significant concern for the widespread application of AASF in structural engineering. The present study compares the efficacy of activator and mineral admixtures in mitigating the autogenous shrinkage of AASF, and discusses the underlying mechanism. The results show...
journal article 2023
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Zhang, Y. (author), Zhang, Shizhe (author), Liu, C. (author), Copuroglu, Oguzhan (author)
In this paper, the authors characterized two types of zonation within slag rims in aged alkali-activated slag (AAS) systems through SEM and TEM technology. These two elemental zonation were closely related to the pore structure of AAS pastes, thus providing strong implication for the transport- and durability-related performance of AAS...
journal article 2023
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Nazari, Farzaneh (author), Aghabozorgi Nafchi, Shokoufeh (author), Vahabzadeh Asbaghi, Ehsan (author), Farajzadeh, R. (author), Niasar, Vahid J. (author)
Hypothesis: Underground hydrogen storage in depleted hydrocarbon reservoirs and aquifers has been proposed as a potential long-term solution to storing intermittently produced renewable electricity, as the subsurface formations provide secure and large storage space. Various phenomena can lead to hydrogen loss in subsurface systems with the...
journal article 2023
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Lyu, X. (author), Voskov, D.V. (author)
A consistent thermodynamic model based on a combination of the Peng-Robinson equation of state for gas components with an activity model for the aqueous phase is utilized in this study to accurately evaluate the performance of geologic CO<sub>2</sub> storage in saline aquifers. To account for thermal effects, the phase enthalpy and...
journal article 2023
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den Boer, Sophie (author)
In vitro models are fundamental in the study of cell behaviour, the physiological function of organs, and their response to drugs and toxins. However, the shortage of accurate and reliable in vitro models calls for the development of in vitro lung models that better recapitulate lung physiology and pathology. Lung-on- a-chip models are promising...
master thesis 2022
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Horsthuis, Jan (author)
Capillary self-alignment shows the potential to keep small components aligned using soft liquid contact when disturbed by external forces. Whilst this concept has been promising, mostly static situations have been investigated, making it unclear how a receptor-droplet-chip (RDC) configuration behaves dynamically and where its stability limits...
master thesis 2022
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Li, K. (author)
Naturally fractured reservoirs (NFRs) gain much attention worldwide because they are often encountered in aquifer remediation, CO2 sequestration, and hydrocarbon extraction. In hydrocarbon extraction, however, oil recovery by gas injection in NFRs is usually low, because of poor sweep efficiency. During gas injection, the displacement front is...
doctoral thesis 2022
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)
Foam is applied in enhanced oil recovery to improve the sweep of injected gas and increase oil recovery, by greatly reducing the mobility of gas. In the laboratory, X-ray computed tomography is commonly used to evaluate the performance of foam in core plugs. However, foam properties, such as bubble size and capillary pressure, are much more...
journal article 2022
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Singla, A. (author), Šavija, B. (author), Sluys, Lambertus J. (author), Romero Rodriguez, C. (author)
Lattice models have been used to simulate mass transport to predict durability of cementitious materials. In particular, the use of dual lattice meshes allows for the coupling of fracture and transport processes, which commonly occur at the same time in these materials. Literature has shown good agreement between simulations and experimental...
journal article 2022
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Teixidó, Helena (author), Staal, Jeroen (author), Caglar, Baris (author), Michaud, Véronique (author)
Capillarity plays a crucial role in many natural and engineered systems, ranging from nutrient delivery in plants to functional textiles for wear comfort or thermal heat pipes for heat dissipation. Unlike nano- or microfluidic systems with well-defined pore network geometries and well-understood capillary flow, fiber textiles or preforms used...
review 2022
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Jongerius, Camiel (author)
The study of adhesion mechanisms in animals such as the gecko has helped mankind with the understanding and development of novel adhesives. The adhesion mechanism of the tree frog is not fully understood, it is a wet adhesion mechanism which works differently than the dry adhesion mechanisms of animals, such as the gecko, studied previously. The...
master thesis 2021
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Zaaijer, Floris (author)
Mechanical air entrapment, void compression and void dissolution are the main mechanisms behind void formation in liquid composite molding. Mechanical air entrapment is induced by the highly non-uniform geometry at the meso- and micro-scale and the heterogeneous properties of the reinforcing material. This results in differences in the velocity...
master thesis 2021
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Yu, G. (author)
Creating a gas-liquid foam means dispersing gas as individual bubbles in an aqueous solution, in which each gas bubble is separated by liquid films or lamella. The most common form of liquid foam (as opposed to solid foams, like polymer sponges) seen in day-to-day life is bulk foam. This refers to a foam that rests in a large container (or flows...
doctoral thesis 2021
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Chaliasou, Napoleana-Anna (author), Michalopoulos, Spyridon (author), Kanellopoulos, Antonios (author)
The need for infrastructure development is of major importance and the projected global infrastructure investment between 2013-2030 is estimated in the excess of £30 trillion to support the rapid growth of societies and economies worldwide (1). This trend puts civil infrastructure industry under immense stress to plan properly, construct fast...
conference paper 2021
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Chen, X. (author), Sanchez, T. (author), Conciatori, D. (author), Chaouki, H. (author), Sorelli, L. (author), Selma, B. (author), Chekired, M. (author)
This paper presents a new 2D water transport model considering capillary suction to predict the water content evolution in the concrete porosity. The basic formulations of the model are illustrated, and a switching algorithm is introduced to simulated wet-drying effects. Two specific absorption tests are studied to validate this model. The first...
conference paper 2021
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)
In enhanced oil recovery, foam can effectively mitigate conformance problems and maintain a stable displacement front, by trapping gas and reducing its relative permeability in situ. In this study, to understand gas trapping in fractures and how it affects foam behavior, we report foam experiments in a 1-m-long glass model fracture with a...
journal article 2021
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Li, K. (author), Sharifnik, Mohammadamin (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)
Foam coarsening by diffusion (Ostwald ripening) has been well studied in bulk foams. However, it is less well understood in porous media. In particular, the mechanisms that may slow or stop coarsening have not been fully investigated. In this paper, we report an experimental study of foam coarsening in two 1-m-long and 15-cm-wide model fractures...
journal article 2021
Searched for: subject%3A%22capillary%22
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