Generic workflow of groundwater flow simulations in geologically complicated domains with millions of unstructured grids

Springer Science and Business Media LLC - Tập 33 Số 1 - 2022
Tai-Sheng Liou1, Sung-Yang Huang2, Chao-Yan Lin3, Ting-Wei Huang3, Chuan-Wei Chung3, Pei-Shan Hsieh3, Cheng-Kuo Lin3
1Department of Earth and Environmental Sciences, National Chung Cheng University, No. 168, Sec. 1, University Rd., Minshiung, Chiayi County, Taiwan
2Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan
3Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu City, Taiwan

Tóm tắt

AbstractNumerical groundwater flow simulation involves manual and tedious pre-processing and post-processing procedures. Hence, this study developed a systematic and efficient workflow to alleviate model buildup and data-processing burdens, allowing researchers to focus on the application aspects of simulation results. This highly automatic workflow allows researchers to execute three-dimensional groundwater flow simulations in sites with complex hydrogeological conditions. Processes in the workflow are formed as a trilogy: building a hydrogeological conceptual model, generating a site-specific unstructured mesh and specifying simulation conditions, and executing the simulation and post-processing results. The workflow feasibility has been demonstrated by simulating the three-component (water, brine, and air) fluid flow in Huayu Islet, the only andesitic island of the basaltic Penghu archipelago, using TOUGH3 (Transport of Unsaturated Groundwater and Heat version 3) and its EOS7 (Equation of State #7) fluid module. Our self-developed mesh generator can produce a locally refined unstructured mesh with millions of grid cells that can capture the essential geological features of Huayu. It was found that, of the three scenarios considered, only the one using a fine mesh coupled with a two-phase Dirichlet boundary condition at the top surface could obtain a physically meaningful bowl-shaped fresh water and brine interface and reasonable transport pathway characteristics. In summary, the developed workflow serves as a practical methodology to authentically characterize the hydrogeologic mechanisms of a site with complicated geology.

Từ khóa


Tài liệu tham khảo

Chen C-H, Lee C-Y, Huabg TC, Ting JS (1997) Radiometric ages and petrological and geochemical aspects of some Late Cretaceous and Paleogene volcanic rocks beneath the northern offshore of Taiwan. Pet Geol Taiwan 31:61–88

Chen C-H, Hsieh P-S, Wang K-L, Yang H-J, Lin W, Liang Y-H, Lee C-Y, Yang H-C (2010) Zircon LA-ICPMS U–Pb ages and Hf isotopes of Huayu (Penghu Islands) volcanics in the Taiwan Strait and tectonic implication. J Asian Earth Sci 37(1):17–30. https://doi.org/10.1016/j.jseaes.2009.07.003

Chung SL, Sung SS, Tu K, Chen C-H, Lee C-Y (1994) Late Cenozoic basaltic volcanism around the Taiwan Strait, SE China: product of lithosphere–asthenosphere interaction during continental extension. Chem Geol 112:1–20

del Potro R, Díez M, Blundy J, Camacho AG, Gottsmann J (2013) Diapiric ascent of silicic magma beneath the Bolivian Altiplano. Geophys Res Lett 40(10):2044–2048. https://doi.org/10.1002/grl.50493

Finsterle S, Commer M, Edmiston JK, Jung Y, Kowalsky MB, Pau GSH, Wainwright HM, Zhang Y (2017) iTOUGH2: a multiphysics simulation–optimization framework for analyzing subsurface systems. Comput Geosci 108:8–20. https://doi.org/10.1016/j.cageo.2016.09.005

Frey PJ, George P-L (2008) Mesh generation—application to finite elements, 2nd edn. Wiley-ISTE, New York

Gudmundsson A (2020) Volcanotectonics: Understanding the structure, deformation and dynamics of volcanoes. Cambridge University Press, Cambridge

Heap MJ, Reuschlé T, Farquharson JI, Baud P (2018) Permeability of volcanic rocks to gas and water. J Volcanol Geotherm Res B. https://doi.org/10.1016/j.jvolgeores.2018.02.002

Henry HR (1964) Effects of dispersion on salt encroachment in coastal aquifers. In: Sea water in coastal aquifers, U.S. geological survey water-supply, Paper 1613-C, pp 70–84

Jung Y, Pau GSH, Finsterle S, Pollyea RM (2017) TOUGH3: a new efficient version of the TOUGH suite of multiphase flow and transport simulators. Comput Geosci 108:2–7. https://doi.org/10.1016/j.cageo.2016.09.009

Jung Y, Pau GSH, Finsterle S, Doughty C (2018) TOUGH3 user’s guide (LBNL-2001093). Lawrence Berkeley National Laboratory LBNL-2001093, Berkeley

Liou T-S, Lee Y-H, Chiang L-W, Lin W, Guo T-R, Chen W-S, Chien J-M (2010) Alternative water resources in granitic rock: a case study from Kinmen Island, Taiwan. Environ Earth Sci 59(5):1033–1046. https://doi.org/10.1007/s12665-009-0095-4

Luu K (2020) toughio: pre- and post-processing Python library for TOUGH. J Open Source Softw 5(51):2412. https://doi.org/10.21105/joss.02412

Narasimhan TN, Witherspoon PA (1976) An integrated finite difference method for analyzing fluid flow in porous media. Water Res Res 12(1):57–64

Pruess K, Oldenburg C, Moridis G (2012) TOUGH2 user’s guide, version 2.1 (LBNL-43134). Lawrence Berkeley National Laboratory LBNL-43134, Berkeley

Sadrehaghighi I (2021) Unstructured meshing for CFD (I. Sadrehaghighi Ed.). CFD Open Series, Annapolis

Simpson MJ, Clement TP (2004) Improving the worthiness of the Henry problem as a benchmark for density-dependent groundwater flow models. Water Res Res. https://doi.org/10.1029/2003wr002199

Utkarsh A (2019) The ParaView guide community edition updated for ParaView version 5.6. Kitware Inc.

Yang H-C, Chen Y-S, Huang C-C, Wang J-M (2008) Volcanic lithofacies of the Huahsu Island. Bull Cent Geol Surv 21:143–164 (in Chinese)

Zhang K, Wu Y-S, Pruess K (2008) TOUGH2-MP—a massively parallel version of the TOUGH2 code (LBNL-315E). Lawrence Berkeley National Laboratory LBNL-315E, Berkeley

Thông tin
Thông tin xuất bản

Springer Science and Business Media LLC

Tập 33 Số 1

Thông tin tác giả