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Comparison of Structured and Unstructured Finite Difference Simulation of Groundwater Flow
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Wen-hua DING, Yong-xiang ZHANG, Tong GUO, Rui-tao JIA
Water Resources and Power | 2023, 41(9) : 32 - 35
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Water Resources and Power | 2023, 41(9): 32-35
• HYDROLOGY, WATER RESOURCES AND ENVIRONMENT •
Comparison of Structured and Unstructured Finite Difference Simulation of Groundwater Flow
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Wen-hua DING, Yong-xiang ZHANG, Tong GUO, Rui-tao JIA
Affiliations
  • Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China
Published: 2023-09-25 doi: 10.20040/j.cnki.1000-7709.2023.20222122
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The selection of a suitable, efficient and accurate numerical model for groundwater flow is an important basis for numerical simulation work. The analytical solution of water level of seepage calculations of fully penetrating well in a phreatic aquifer was compared with the numerical solution of water level of structured conventional model, structured encrypted model and two unstructured encrypted models to analyze the degree of fit and error. The results show that the accuracy of the numerical simulation of all four models is quite good, and the average absolute error is less than 0.1, R2 is greater than 0.98. Compared with the structured traditional model, the accuracy of the structured encryption model is the best, the unstructured 4-level encryption model is the second and the 3-level encryption model is the worst; The accuracy of the unstructured four-level encryption model is slightly worse than that of the structured encryption model, but the number of mesh is reduced by 90%. It is a highly applicable, efficient and accurate numerical model for groundwater flow, which improves the computational efficiency and makes up for the poor applicability of multi-point encryption of the structured encryption model.

numerical simulation  /  groundwater  /  unstructured model  /  fully penetrating well in a phreatic aquifer
Wen-hua DING, Yong-xiang ZHANG, Tong GUO, Rui-tao JIA. Comparison of Structured and Unstructured Finite Difference Simulation of Groundwater Flow[J]. Water Resources and Power, 2023 , 41 (9) : 32 -35 . DOI: 10.20040/j.cnki.1000-7709.2023.20222122
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20222122
  • Receive Date：2022-10-13
  • Online Date：2026-01-28
  • Published：2023-09-25
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  • Received：2022-10-13
  • Revised：2022-11-30
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    Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20222122
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表12种不同金属材料的力学参数
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Number of
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Number of
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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