| Issue |
E3S Web Conf.
Volume 205, 2020
2nd International Conference on Energy Geotechnics (ICEGT 2020)
|
|
|---|---|---|
| Article Number | 07001 | |
| Number of page(s) | 6 | |
| Section | Minisymposium: Geothermal Use of Built Urban Infrastructures and the Shallow Subsurface for Energy Storage and Production (organized by Frank Wuttke, Thomas Nagel, Sebastian Bauer and David Smeulders) | |
| DOI | https://doi.org/10.1051/e3sconf/202020507001 | |
| Published online | 18 November 2020 | |
Finite element modelling of an energy-geomembrane underground pumped hydroelectric energy storage system
1 Department of Engineering, Aarhus University, Inge Lehmans Gade 10, 8000 Aarhus, Denmark
2 Per Aarsleff A/S, Design & Engineering, Marine Design, Hasselager Allé 5, 8260 Viby J, Denmark
3 Rambøll, Division for Transport, Department of Geotechnics and Geo Structures, Oluf Palmes Allé 22, 8200 Aarhus N, Denmark
† formerly Department of Engineering, Aarhus University, Denmark
* Corresponding author: hhs@eng.au.dk
The increasing need for energy storage technology has led to a massive interest in novel energy storage methods. The energy geomembrane system is such a novel energy storage method. The concept of the system is briefly introduced, and a holistic numerical model of the system is presented. The model uses advanced finite-element techniques to model the energy storage system using fluid cavity elements. The developed geomembrane energy system is modelled with different constitutive models to represent the soil behaviour: a linear elastic model, a nonlinear Mohr-Coulomb model, and a hypoplastic constitutive model. The consequences of these different models on the results are studied. Hereby, the focus is the first inflation and deflation cycle of the system.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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