E3S Web Conf.
Volume 205, 20202nd International Conference on Energy Geotechnics (ICEGT 2020)
|Number of page(s)
|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)
|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: firstname.lastname@example.org
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
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