Projects per year
Abstract
A wide range of phenomena in natural or engineered systems emerge from strongly coupled hydraulic, chemical and mechanical processes involving a mix of clearly discrete and quasi-continuous mechanisms. Non-local formulations of these processes, e.g. based on Peridynamics, offer significant advantages compared to classical local formulations. Existing Peridynamics models for water flow and chemical transport are applicable only to saturated systems and use loosely coupling schemes, such as explicit time stepping approaches. This work advances the non-local approach by developing a bond-based formulation for coupled water flow and chemical transport in partially saturated porous media. An implicit solution is proposed for coupling the PD formulation of chemical transport with water flow formulation. Firstly, the proposed formulation is verified against results from finite element/finite difference transient solutions for 1-D and 2-D coupled problems. The agreement between results demonstrates the accuracy of the proposed methodology. Secondly, a series of case studies are presented to illustrate the model’s capability to capture discontinuities and heterogeneities, including stationary cracks, propagating cracks, and randomly distributed permeable and impermeable inclusions. The results show that the multi-physics Peridynamics-based formulations and computational model (Pyramid) provide clear advantages to classical local formulations for analyses of reactive transport in partially saturated porous media with physically realistic microstructures.
Original language | English |
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Article number | 125648 |
Number of pages | 16 |
Journal | Journal of Hydrology |
Volume | 591 |
Early online date | 18 Oct 2020 |
DOIs | |
Publication status | Published - 11 Dec 2020 |
Keywords
- Multiphysics, chemical transport
- Peridynamics
- Unsaturated, porous media
- Water flow
Fingerprint
Dive into the research topics of 'Peridynamics modelling of coupled water flow and chemical transport in unsaturated porous media'. Together they form a unique fingerprint.Projects
- 2 Finished
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Managing Boron in geothermal outflow water for sustainable development of high temperature geoenergy energy systems in Gediz Graden, Turkey
Sedighi, M. (PI), Babaei, M. (CoI) & Hadi Mosleh, M. (CoI)
17/02/20 → 31/01/22
Project: Research
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Geometric Mechanics of Solids: new analysis of modern engineering materials - GEMS
Jivkov, A. (PI) & Margetts, L. (CoI)
1/11/16 → 31/10/21
Project: Research
Research output
- 5 Article
-
A dual-porosity model for analysis of temperature effects on hydro-mechanical behaviour of GMZ bentonite under unconfined conditions
Ni, H., Liu, J., Jivkov, A., Shen, W. & Shao, J., 1 Feb 2023, In: Computers and Geotechnics. 154, 12 p., 105127.Research output: Contribution to journal › Article › peer-review
Open AccessFile36 Downloads (Pure) -
Analysis of heat transfer and water flow with phase change in saturated porous media by bond-based peridynamics
Nikolaev, P., Sedighi, M., Jivkov, A. P. & Margetts, L., 1 Apr 2022, In: International Journal of Heat and Mass Transfer. 185, 13 p., 122327.Research output: Contribution to journal › Article › peer-review
Open AccessFile36 Downloads (Pure) -
Modelling the effects of water chemistry and flowrate on clay erosion
Yan, H., Sedighi, M. & Jivkov, A., 5 Dec 2021, In: Engineering Geology. 294, 12 p., 106409.Research output: Contribution to journal › Article › peer-review
Open AccessFile90 Downloads (Pure)