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Query: "keywords" (numerical modelling) .

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1.
Lessons learned from the monitoring of retaining structures, built in demanding geotechnical conditions in Slovenia
Pavel Žvanut, Janko Logar, 2019, published scientific conference contribution

Abstract: A typical retaining structure built with large-diameter bored piles in soft clastic rock, and sup-ported by pre-stressed permanent ground anchors, is discussed. Step-by-step back analyses were performed. A simplified geological structure was first used in the analyses, together with a simple Mohr-Coulomb model. The results were compared with more complex analyses using a Hardening Soil model and a more detailed geological structure. Much better results were obtained with the use of the HS model, which is more suitable for the modelling of rock of such a type, but even with the use of the MC model the final results were quite good, making the use of the observational method attractive for engineers.
Keywords: geotechnics, gretaining structures, bored piles, numerical modelling, finite element method, observational method
Published in DiRROS: 27.03.2024; Views: 22; Downloads: 6
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2.
Impact of Open-Loop Systems on Groundwater Temperature in NE Slovenia
Simona Adrinek, Mitja Janža, Mihael Brenčič, 2023, original scientific article

Abstract: To achieve sustainable and efficient use of shallow geothermal resources, it is important to understand the heat transfer in the subsurface of the planned geothermal system. In the City Municipality of Murska Sobota, NE Slovenia, the use of geothermal open-loop systems has increased in recent years. Their high spatial density raises the question of possible mutual interference between the systems. By compiling geological, hydrogeological, and thermal data, obtained from the monitoring network, fieldwork, and knowledge of regional hydrogeological conditions, we have developed a transient groundwater flow and heat transfer model to evaluate the impact of the open-loop systems on the subsurface and surrounding systems. The transient simulation showed that the thermal state in the observed area is restored over the summer, when the systems are not in operation. Also, the systems do not have significant mutual interference that would affect their efficiency. However, as interest in installing new systems in the area increases, simulations of the thermal plumes of new geothermal systems are needed to ensure sustainable and efficient use of shallow geothermal energy in the future.
Keywords: geothermal energy, open-loop system, groundwater heat pump, intergranular aquifer, numerical modelling, thermal plume
Published in DiRROS: 19.09.2023; Views: 334; Downloads: 90
.pdf Full text (36,17 MB)

3.
Glued-in rods in cross laminated timber - numerical simulations and parametric studies
Boris Azinović, Henrik Danielsson, Erik Serrano, Miha Kramar, 2019, original scientific article

Abstract: Numerical simulations and parametric studies of glued-in rods in cross-laminated timber have been performed. The simulations were based on 3D finite element analysis, using a cohesive surface model for the bond-lines between the laminations and the bond-line along the rod. The parametric studies investigated the influence of the glued-in length, the rod diameter, and the rod-to-grain angle on the load-bearing capacity and stiffness of the connection. The analyses showed that the load-bearing capacity generally increases with the glued-in length and the rod diameter, which agrees well with experiments. For different rod-to-grain angles, different mechanical behaviour was observed, especially considering the failure modes.
Keywords: glued-in rods, cross laminated timber (CLT), parametric study, nonlinear numerical modelling, glued-in length, rod diameter, rod orientation
Published in DiRROS: 13.09.2023; Views: 220; Downloads: 126
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4.
Treatment planning for electroporation-based therapies
Bor Kos, 2018, published scientific conference contribution abstract (invited lecture)

Keywords: treatment planning, electrochemotherapy, numerical modelling
Published in DiRROS: 25.05.2020; Views: 1520; Downloads: 479
.pdf Full text (33,04 KB)

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