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Verhoeff, Thom (author)This study is part of an ongoing research project, which aims to increase the physical understanding of the plume formation on Saturn’s icy moon Enceladus. The experimental setup presented in this study is the third iteration of the physical models aiming to recreate the main plume characteristics, where in this study the effects of the channel...master thesis 2023
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Ariëns, M.I. (author)Hydrogen gas is an essential reagent in numerous industrial processes including ammonia synthesis. Ammonia is a key intermediate in the synthesis of nitrogen-based fertilisers, e.g. nitrates and urea. According to recent estimates (2008), approximately half of the world population is fed by nitrogen-based fertilisers of synthetic origin....doctoral thesis 2023
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Stroo, Aike (author)Methane pyrolysis is a technology that has the potential to greatly reduce the CO2 emissions of hydrogen production on a large scale. The process generates solid carbon instead of gaseous, thereby inhibiting emissions and has a relatively low process energy demand.<br/><br/>A three-step approach was taken to investigate the feasibility of...master thesis 2023
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Oumejjoud, Salima (author)Using a field classification, I have assessed the likelihood that a gas field caused a seismic event. I have put the focus on all of the minor gas fields located in the Rotliegend sandstone formation in the Netherlands. These gas fields were divided into five geologically distinctly different regions: the North Holland Platform (NHP), the...master thesis 2023
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Peña, Álvaro (author), Matatagui, Daniel (author), Ricciardella, F. (author), Sacco, L.N. (author), Vollebregt, S. (author), Otero, Daniel (author), López-Sánchez, Jesús (author), Marín, Pilar (author), Horrillo, Mari Carmen (author)Nitrogen dioxide (NO<sub>2</sub>) is a potential hazard to human health at low concentrations, below one part per million (ppm). NO<sub>2</sub> can be monitored using gas sensors based on multi-layered graphene operating at ambient temperature. However, reliable detection of concentrations on the order of parts per million and lower is...journal article 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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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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Alkharraa, H.S.H. (author), Wolf, K.H.A.A. (author), Kwak, Hyung T. (author), Deshenenkov, Ivan S. (author), AlDuhailan, Mohammed A. (author), Mahmoud, Mohamed A. (author), Arifi, Suliman A. (author), AlQahtani, Naif B. (author), AlQuraishi, Abdulrahman A. (author), Zitha, P.L.J. (author)Macro-, meso-, micro-pore systems combined with clay content are critical for fluid flow behavior in tight sandstone formations. This study investigates the impact of clay mineralogy on pore systems in tight rocks. Three outcrop samples were selected based on their comparative petrophysical parameters (Bandera, Kentucky, and Scioto). Our...conference paper 2023
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Li, Y. (author), Slob, E.C. (author), Werthmüller, D. (author), Wang, Lipeng (author), Lu, Hailong (author)Natural gas hydrates have been an unconventional source of energy since the beginning of this century. Gas-hydrate-filled reservoirs show higher resistivity values compared with water-filled sediments. Their presence can be detected using marine controlled-source electromagnetic methods. We classify acquisition configurations into stationary and...journal article 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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Huang, Man (author), Su, Dongchao (author), Zhao, Zhirui (author), Wu, Lianghong (author), Fang, B. (author), Ning, Fulong (author)The trial production of natural gas hydrate reservoirs remains poor. Reasonable reservoir reconstruction, which can improve formation permeability, is an important approach to increasing the efficiency and enhancing production. In this work, water jet slotting is proposed to reconstruct an natural gas hydrate reservoir near a wellbore. The...journal article 2023
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Blake, J.W. (author), Konderla, V. (author), Baumgartner, L.M. (author), Vermaas, D.A. (author), Padding, J.T. (author), Haverkort, J.W. (author)The use of gas diffusion electrodes that supply gaseous CO<sub>2</sub> directly to the catalyst layer has greatly improved the performance of electrochemical CO<sub>2</sub> conversion. However, reports of high current densities and Faradaic efficiencies primarily come from small lab scale electrolysers. Such electrolysers typically have a...journal article 2023
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Veefkind, j. Pepijn (author), Serrano Calvo, R. (author), de Gouw, J. (author), Dix, B. (author), Schneising, O. (author), Buchwitz, M. (author), Barré, J. (author), van der A, R. J. (author), Liu, M. (author), Levelt, Pieternel Felicitas (author)Emissions of methane (CH<sub>4</sub>) in the Permian basin (USA) have been derived for 2019 and 2020 from satellite observations of the Tropospheric Monitoring Instrument (TROPOMI) using the divergence method, in combination with a data driven method to estimate the background column densities. The resulting CH<sub>4</sub> emission data,...journal article 2023
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Hosseini, A. (author), Hage, Johannes (author), Meijer, Koen (author), Offerman, S.E. (author), Yang, Y. (author)In this paper a CFD analysis of HIsarna off-gas system for post combustion of CO-H2-carbon particle mixture is presented to evaluate the effect of different sub-models and parameters on the accuracy of predictions and simulation time. The effects of different mesh type, mesh grid size, radiation models, turbulent models, kinetic mechanism,...journal article 2023
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Huber, S. (author), Terwiel, D. (author), Evers, W.H. (author), Maresca, D. (author), Jakobi, A. (author)Gas vesicles are gas-filled nanocompartments that allow a diverse group of bacteria and archaea to control their buoyancy. The molecular basis of their properties and assembly remains unclear. Here, we report the 3.2 Å cryo-EM structure of the gas vesicle shell made from the structural protein GvpA that self-assembles into hollow helical...journal article 2023
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Iaiani, Matteo (author), Tugnoli, Alessandro (author), Cozzani, Valerio (author), Reniers, G.L.L.M.E. (author), Yang, M. (author)Offshore Oil&Gas facilities are attractive targets of intentional malicious attacks (security attacks) that may trigger cascading events (e.g., the release and dispersion of hazardous material and/or energy, fires, explosions) with consequences on people, environment, and assets. The severity of these consequences is potentially similar to...journal article 2023
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Liang, Hongping (author), Guo, Xin (author), Guo, Lanpeng (author), Liu, Siying (author), Zhan, Qiuqiang (author), Yang, Haihong (author), Li, Hao (author), de Rooij, Nicolaas Frans (author), Lee, Yi Kuen (author), French, P.J. (author), Wang, Yao (author), Zhou, Guofu (author)Constructing near-infrared light (NIR) light-enhanced room temperature gas sensors is becoming more promising for practical application. In this study, learning from the structure and photosynthetic process of chlorophyll thylakoid membranes in plants, the first “Thylakoid membrane” structural formaldehyde (HCHO) sensor is constructed by...journal article 2023
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Nederstigt, P. (author), Pecnik, R. (author)Isentropic processes in thermodynamics are fundamental to our understanding of numerous physical phenomena across different scientific and engineering fields. They provide a theoretical reference case for the evaluation of real thermodynamic processes and observations. Yet, as analytical relations for isentropic transformations in gas dynamics...journal article 2023
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SIACHOS, KONSTANTINOS (author)The North Sea has significant potential in becoming a green energy hub, due to its remarkable offshore wind potential, and could therefore facilitate the energy transition to a net-zero energy system in Europe in the coming decades. In this transition, hydrogen is also predicted to play a key role, due to its ability to transport and store...master thesis 2022