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A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
Published on: May 18, 2015
A review of multiphysics coupling numerical modeling techniques for risk assessment in geological disposal of
Qing Wang1, Kezheng Lei1, Zhiyang Zhu1
1China Institute for Radiation Protection, Taiyuan, 030006, China.
Abstract:
The long-term safety assessment for geological disposal of high-level radioactive waste (HLW) relies on accurately predicting coupled thermal-hydrological-mechanical-chemical (THMC) processes. This review systematically summarizes advances in multiphysics numerical modeling in the field. It synthesizes THMC coupling mechanisms, mathematical models, and numerical strategies, while critically analyzing limitations in simulating millennial-scale evolution, multi-media coupled responses, and radionuclide migration uncertainties. Current challenges include integrating realistic geological structures, representing multiscale fractured media, and achieving computational efficiency for full-system long-term simulations. In response, key future pathways are outlined: advancing stress-field simulation via corner-point grid and finite element integration; developing composite media multiphysics models; adopting domain-decomposition hybrid discrete methods; and implementing high-performance parallel computing frameworks. Progress in these areas will strengthen predictive confidence and engineering applicability, thereby providing a firmer numerical basis for the safety design and risk management of geological disposal systems.
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