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http://dx.doi.org/10.7474/TUS.2022.32.2.144

Performance Evaluation of OGS-FLAC Simulator for Coupled Thermal-Hydrological-Mechanical Analysis  

Park, Dohyun (Deep Subsurface Storage and Disposal Research Center, Korea Institute of Geoscience and Mineral Resources)
Park, Chan-Hee (Deep Subsurface Storage and Disposal Research Center, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Tunnel and Underground Space / v.32, no.2, 2022 , pp. 144-159 More about this Journal
Abstract
The present study developed a sequential approach-based numerical simulator for modeling coupled thermal-hydrological-mechanical (THM) processes in the ground and investigated the computational performance of the coupling analysis algorithm. The present sequential approach linked the two different solvers: an open-source numerical code, OpenGeoSys for solving the thermal and hydrological processes in porous media and a commercial code, FLAC3D for solving the geomechanical response of the ground. A benchmark test of the developed simulator was carried out using a THM problem where an analytical solution is given. The benchmark problem involves the coupled behavior (variations in temperature, pore pressure, stress, and deformation with time) of a fully saturated porous medium which is subject to a point heat source. The results of the analytical solution and numerical simulation were compared and the validity of the numerical simulator was investigated.
Keywords
Coupled thermal-hydrological-mechanical behavior; Sequential coupling analysis; Open-source simulator; Benchmark test; OGS-FLAC;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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