Searched for: subject:"stability"
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Ebrahimi, Amin (author), Kleijn, C.R. (author), Richardson, I.M. (author)
Development, optimisation and qualification of welding and additive manufacturing procedures to date have largely been undertaken on an experimental trial and error basis, which imposes significant costs. Numerical simulations are acknowledged as a promising alternative to experiments, and can improve the understanding of the complex process...
journal article 2021
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Varkey, D. (author)
This thesis utilises the random finite element method (RFEM) to provide practical guidance and tools for geotechnical engineers to account for the influence of soil spatial variability. This has involved: (a) practical insight and guidance on the choice of characteristic soil property values and scales of fluctuation; (b) a robust approach to...
doctoral thesis 2020
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Ahmad, Z. (author), Papadakis, Stelios (author), Perilla Guerra, A.D. (author), Rueda, José L. (author), van der Meijden, M.A.M.M. (author)
Traditionally, electrical power systems have been based on fossil-fuel fired generation plants to satisfy the load demand. However, due to environmental targets for significant CO2 reduction, a gradual decommission of the aforementioned plants is observed whereas renewable energy sources are gaining gradually increasing momentum, which entails...
conference paper 2020
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Broekema, Y.B. (author)
The Eastern Scheldt storm surge barrier is an icon of Dutch hydraulic engineering. Downstream of the barrier, large local erosion pits (scour holes) have formed adjacent to the applied bed protection after its construction. It was expected during the design phase that these would develop, but both the magnitude of the scour hole depth as well as...
doctoral thesis 2020
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He, Xin (author), Vuik, Cornelis (author)
This paper introduces three new Schur complement approximations for the augmented Lagrangian preconditioner. The incompressible Navier-Stokes equations discretized by a stabilized finite element method are utilized to evaluate these new approximations of the Schur complement. A wide range of numerical experiments in the laminar context...
journal article 2020
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Meeusen, M. (author)
The corrosion protection of metallic substrates with corrosion inhibitors, either in solution or dispersed in a coating formulation, has been the focus of many research topics for many decades and has intensified in recent years even more with industry moving away from hexavalent chromium (Cr(VI))- based corrosion inhibitors. While mainly...
doctoral thesis 2020
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Wang, Da (author), Rueda, José L. (author), Rakhshani, E. (author), van der Meijden, M.A.M.M. (author)
Unlike synchronous generators, wind turbines cannot directly respond to large disturbances, which may cause transient instability, due to their power electronic-based interface and maximum power control strategy. To effectively monitor the influence of wind turbines, this paper proposes an approach that combines decision trees (DTs), and a...
journal article 2020
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Groot, K.J. (author), Schuttelaars, H.M. (author)
The initial stage of the laminar–turbulent transition of semi-infinite flows can be characterized as either an absolute or convective instability, naturally associated with localized wave packets. A convective instability is directly linked to an absolute instability in a different reference frame. Therefore, our aim is to determine the...
journal article 2020
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D'Ambrosio, Vasil (author), Dore, Eleonora (author), Di Blasi, Roberto (author), van den Broek, M.A. (author), Sudarsan, Suresh (author), Horst, Jolanda ter (author), Ambri, Francesca (author), Keasling, Jay D. (author), Mans, R. (author)
Engineering living cells for production of chemicals, enzymes and therapeutics can burden cells due to use of limited native co-factor availability and/or expression burdens, totalling a fitness deficit compared to parental cells encoded through long evolutionary trajectories to maximise fitness. Ultimately, this discrepancy puts a selective...
journal article 2020
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Adiyabazar, Choidorj (author), Acosta, Martha N. (author), Gonzalez-Longatt, F. (author), Rueda, José L. (author), Palensky, P. (author)
Mongolia power system (MPS) is evolving quite fast, and the integration of renewable resources (mainly wind power and solar photovoltaic) reached 20% by 2019. The MPS is interconnected to Russia in order to cover local energy deficits, especially during freezing winters. However, the interconnection to Russia is a sensible element of the MPS,...
conference paper 2020
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Kramer, Gert Jan (author), Arts, Twan (author), Urai, Janos L. (author), Vrijling, J.K. (author), Huynen, Jan M.H. (author)
We review the status of a 1.4 GW, 8 GWh underground pumped hydro storage (U-PHS) project in the southern Netherlands, which has been under development since the 1980s. Its history shows how the prospect of a large-scale U-PHS for The Netherlands (a country whose proverbial flatness prohibits PHS) has been attractive in every decade, based on...
journal article 2020
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Jamalinia, E. (author), Vardon, P.J. (author), Steele-Dunne, S.C. (author)
Climatic conditions and vegetation cover influence water flux in a slope which affect the pore water pressure and self weight, hence its stability. High evapotranspiration and low precipitation rates during summer cause dry soil with low soil moisture (SM) that leads to soil shrinkage, which leads to cracking and reduced shear strength, which...
conference paper 2020
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Sousi, Mohaned (author), Liu, G. (author), Salinas-Rodriguez, Sergio G. (author), Chen, L. (author), Dusseldorp, Jos (author), Wessels, Peter (author), Schippers, Jan C. (author), Kennedy, M.D. (author), van der Meer, Walter (author)
Although water produced by reverse osmosis (RO) filtration has low bacterial growth potential (BGP), post-treatment of RO permeate, which is necessary prior to distribution and human consumption, needs to be examined because of the potential re-introduction of nutrients/contaminants. In this study, drinking water produced from anaerobic...
journal article 2020
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Wang, H. (author), Liu, X. (author), Erkens, S. (author), Scarpas, Athanasios (author)
One of the main drawbacks of crumb rubber modified bitumen (CRMB) is the storage stability issue. The storage instability of CRMB impedes its further application. This study aims to develop a robust methodology to evaluate the storage stability of CRMB binders using both mechanical and morphological tests. The effects of rubber contents (0, 5...
journal article 2020
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Boricic, A. (author), Rueda, José L. (author), Popov, M. (author)
Renewable energy sources (RES) penetrate power grids at all voltage levels. A large number of RES units are connected to medium-voltage (MV) and low-voltage (LV) levels resulting in a significant share of overall generation. Therefore, the dynamic behavior of such distribution grids should be thoroughly examined. The goal of this paper is to...
conference paper 2020
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Hassan, A.M. (author), Ayoub, M. (author), Eissa, M. (author), Bruining, J. (author), Zitha, P.L.J. (author)
This contribution focuses on surface complexes in the calcite-brine-surfactant system. This is relevant for the recovery of oil when using a new hybrid enhanced oil recovery (EOR) method, which combines smart-water (i.e., ionically modified brine) and foam-flooding (SWAF) of light oil with dissolved carbon dioxide (CO<sub>2</sub>) at high...
journal article 2020
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Kamranzad, Bahareh (author), Lavidas, G. (author), Takara, Kaoru (author)
The wave energy resources in the Indian Ocean can be considered as a potential alternative to fossil fuels. However, the wave energy resources are subject to short-term fluctuations and long-term changes due to climate change. Hence, considering sustainable development goals, it is necessary to assess both short-term (intra-annual) variation...
journal article 2020
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Petitfrere, Martin (author), Nichita, Dan Vladimir (author), Voskov, D.V. (author), Zaydullin, Rustem (author), Bogdanov, Igor (author)
Several compositional reservoir simulators based on equations of state (EoS) have been designed. Yet, few of them can deal with thermal processes such as steam injection and no fully compositional thermal simulation of the steam injection process has been proposed with extra-heavy oils yet. Those simulations appear essential and will offer...
journal article 2020
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Griffioen, M. (author), van Drunen, P. (author), Maaswinkel, E. (author), Perez, R. S.G.M. (author), Happee, R. (author), van Dieën, J. H. (author)
Purpose: The goal of this study was to assess differences in low back stabilization and underlying mechanisms between patients with low back pain (LBP) and healthy controls. It has been hypothesized that inadequate trunk stabilization could contribute to LBP through high tissue strains and/or impingement. Evidence to support this is...
journal article 2020
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Sewdien, V.N. (author), Rueda, José L. (author), van der Meijden, M.A.M.M. (author)
The phase imbalance compensation concept is proposed in literature as an alternative way to mitigate classical subsynchronous resonance (SSR) problems in series-compensated transmission lines. However, a fundamental analysis to determine this concept's ability to mitigate resonances between a doubly-fed induction generator (DFIG) and a series...
journal article 2020
Searched for: subject:"stability"
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