Development and Verification of OGSFLAC Simulator for Hydro- mechanical Coupled Analysis: Single-phase Fluid Flow Analysis

Chan-Hee Park; Taehyun Kim; Eui-Seob Park; Yong-Bok Jung; Eun-Seok Bang

doi:10.7474/TUS.2019.29.6.468

All Issue

2019 Vol.29, Issue 6 Preview Page Next Page

Original Article

Development and Verification of OGSFLAC Simulator for Hydro- mechanical Coupled Analysis: Single-phase Fluid Flow Analysis 수리-역학적 복합거동 해석을 위한 OGSFLAC 시뮬레이터 개발 및 검증: 단상 유체 거동 해석

31 December 2019. pp. 468-479

PDF XML

Abstract

It is essential to comprehend coupled hydro-mechanical behavior to utilize subsurface for the recent demand for underground space usage. In this study, we developed a new simulator for numerical simulation as a tool for researching to consider the various domestic field and subsurface conditions. To develop the new module, we combined OpenGeoSys, one of the scientific software package that handles fluid mechanics (H), thermodynamics (T), and rock and soil mechanics (M) in the subsurface with FLAC3D, one of the commercial software for geotechnical engineering problems reinforced. In this simulator development, we design OpenGeoSys as a master and FLAC3D as a slave via a file-based sequential coupling. We have chosen Terzaghi's consolidation problem related to single-phase fluid flow at a saturated condition as a benchmark model to verify the proposed module. The comparative results between the analytical solution and numerical analysis showed a good agreement.

Keywords

OpenGeoSys

FLAC

OGSFLAC

Hydro-mechanical coupling analysis

최근 대두되고 있는 지하공간 활용의 필요성 증대에 따라 지하공간의 안정적인 활용을 위해서는 수리-역학적 복합거동에 대한 이해가 필수적이다. 본 연구에서는 향후 국내 다양한 현장 및 지중 조건을 고려한 연구를 수행하는데 도구가 될 수 있는 수치해석을 위한 시뮬레이터를 개발하였다. 이를 위해 지중의 유체역학과 열역학, 역학을 해석하는 과학 소프트웨어 중 하나인 OpenGeoSys와 지반의 여러 역학적 문제들을 해석하는데 전문성을 지닌 FLAC3D를 연계하기로 하였다. 연동해석 기법에 대한 조사를 통해 OpenGeoSys를 주(master)로, FLAC3D를 종속(slave)으로 하여 연계 해석하는 파일 기반의 순차적 연계 방식으로 알고리즘을 개발하였다. 또한, 개발된 시뮬레이터의 검증을 위해 포화된 상태에서의 단상 유체 거동과 관련한 Terzaghi의 압밀 문제를 벤치마크 모델로 선정하여 비교 검증을 수행하였으며, 해석적 해와 수치해석의 결과가 잘 일치하는 것을 확인하였다.

키워드

OpenGeoSys

FLAC

OGSFLAC

수리-역학적 연계해석

References

Biot, M. A., 1941, General theory of three-dimensional consolidation, Journal of applied physics, Vol. 12, pp. 155-164.

10.1063/1.1712886

Croucher, A. E. and M. J. O'Sullivan, 2013, Approaches to local grid refinement in TOUGH2 models, In 35th New Zealand Geothermal Workshop, Rotorua, Nov, pp. 17-20.

Elyasi, A., Goshtasbi, K., Hashemolhosseini, H. and S. Barati, 2016, Coupled solid and fluid mechanics simulation for estimating optimum injection pressure during reservoir CO2-EOR, Structural Engineering and Mechanics, Vol. 59, No. 1, pp. 37-57.

10.12989/sem.2016.59.1.037

David, C., Wong, T.-F., and Zhu, W. and J. Zhang, 1994, Laboratory measurement of compaction-induced permeability change in porous rocks: Implications for the generation and maintenance of pore pressure excess in the crust, Pure and Applied Geophysics, Vol. 143, pp. 425-456.

10.1007/BF00874337

Davies, J. and D. Davies, 1999, Stress-dependent permeability: characterization and modeling, SPE Journal.

10.2118/56813-MS

Dong, J.-J., Hsu, J.-Y., Wu, W.-J., Shimamoto, T., Hung, J.-H., Yeh, E.-C., Wu, Y.-H. and H. Sone, 2010, Stress-dependence of the permeability and porosity of sandstone and shale from TCDP hole-a, International Journal of Rock Mechanics and Mining Sciences, Vol. 47, pp. 1141-1157.

10.1016/j.ijrmms.2010.06.019

Gutierrez, M. and A. Makurat, 1997, Coupled HTM modelling of cold water injection in fractured hydrocarbon reservoirs, International Journal of Rock Mechanics & Mining Sciences, Vol. 34, pp. 113-128.

10.1016/S1365-1609(97)00140-8

Itasca , 2013, FLAC-3D (Version 5.0) Online manual.

Jha, B. and R. Juanes, 2014, Coupled multiphase flow and poromechanics: A computational model of pore pressure effects on fault slip and earthquake triggering, Water Resources Research, Vol. 50, No. 5, pp. 3776-3808.

10.1002/2013WR015175

Kim, J., Tchelepi, H. A. and R. Juanes, 2011, Stability and convergence of sequential methods for coupled flow and geomechanics: Fixed-stress and fixed-strain splits, Computers Methods in Applied Mechanics and Engineering, Vol. 200, pp. 1591-1606.

10.1016/j.cma.2010.12.022

Lee, C., Yoon, S., Lee, J. and G.Y. Kim, 2019a, Introduction of Barcelona Basic Model for Analysis of the Thermo-Elasto-Plastic Behavior of Unsaturated Soils, Tunnel and Underground Space, Vol. 29, No. 1, pp. 38-51.

Lee, J., Lee, C. and G.Y. Kim, 2019b, Numerical Modelling of One Dimensional Gas Injection Experiment using Mechanical Damage Model: DECOVALEX-2019 Task A Stage 1A, Tunnel and Underground Space, Vol. 29, No. 4, pp. 262-279.

Lee, J.W., Kim, H.M., Yazdani, M. and E.S. Park, 2017, Influence of Design Parameters of Grout Injection in Rock Mass using Numerical Analysis, Tunnel and Underground Space, Vol. 27, No. 5, pp. 324-332.

Park, C.-H., Beyer, C., Bauer, S. and O. Kolditz, 2008, A study of preferential flow in heterogeneous media using random walk particle tracking, Geosciences Journal, Vol. 12, pp. 285-297.

10.1007/s12303-008-0029-2

Park, C.-H., Bottcher, N., Wang, W. and O. Kolditz, 2011, Are upwind techniques in multi-phase flow models necessary?, Journal of Computational Physics, Vol. 230, pp. 8304-8312.

10.1016/j.jcp.2011.07.030

Park, J.W., Park, E.S., Kim, T., Lee, C. and J. Lee, 2018a, Hydro-mechanical modelling of fault slip induced by water injection: DECOVALEX-2019 Task B (Step 1), Tunnel and Underground Space, Vol. 28, No. 5, pp. 400-425.

Park, J.W., Kim, T., Park, E.S. and C. Lee, 2018b, Coupled hydro-mechanical modelling of fault reactivation induced by water injection: DECOVALEX-2019 Task B (Benchmark Model Test), Tunnel and Underground Space, Vol. 28, No. 6, pp. 670-691.

Rink, K., 2015, The OpenGeoSys data explorer manual.

Rutqvist, J., Wu, Y.-S., Tsang, C.-F. and G. Bodvarsson, 2002, A modeling approach for analysis of coupled multiphase fluid flow, heat transfer, and deformation in fractured porous rock, International Journal of Rock Mechanics & Mining Sciences, Vol. 39, pp. 429-442.

10.1016/S1365-1609(02)00022-9

Taron, J., Elsworth, D. and K.-B. Min, 2009, Numerical simulation of thermal-hydrologic-mechanical-chemical processes in deformable, fractured porous media, International Journal of Rock Mechanics & Mining Sciences, Vol. 46, pp. 842-854.

10.1016/j.ijrmms.2009.01.008

Terzaghi, K., Peck, R. B., and G. Mesri, 1996, Soil Mechanics in Engineering Practice, 3^rd ed., John Wiley & Sons, New York.

Zienkiewicz, O. C., Chan, A., Pastor, M., Schrefler, B. and T. Shiomi, 1999, Computational geomechanics, Citeseer.

Information

Publisher :Korean Society for Rock Mechanics and Rock Engineering
Publisher(Ko) :한국암반공학회
Journal Title :Tunnel and Underground Space
Journal Title(Ko) :터널과 지하공간
Volume : 29
No :6
Pages :468-479
Received Date : 2019-11-25
Revised Date : 2019-12-18
Accepted Date : 2019-12-19
DOI :https://doi.org/10.7474/TUS.2019.29.6.468

Tunnel and Underground Space ISSN:1225-1275(Print) 2287-1748(Online) 터널과 지하공간

All Issue