Validation of an analytical model of groundwater velocity based on laboratory test and numerical simulation

• Published in: Environmental earth sciences Vol. 82; no. 10; p. 258
• Main Authors: Ren, Jie, Zhang, Jinjin, Wang, Dabo
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2023; Springer Nature B.V
• Subjects: Biogeosciences; Dimensional analysis; Earth and Environmental Science; Earth science; Earth Sciences; Energy transfer; Environmental Science and Engineering; Exact solutions; Geochemistry; Geology; Groundwater; Groundwater velocity; Hatching; Heat; Hydraulics; Hydrology/Water Resources; Laboratories; Laboratory tests; Mathematical analysis; Mathematical models; Numerical simulations; Original Article; Riparian land; Rivers; Sand; Seepage; Sensors; Surface water; Surface-groundwater relations; Temperature distribution; Temperature fields; Temporal variations; Terrestrial Pollution; Time series; Undercurrents; Velocity; Water temperature; Analytical model; Laboratory test; Temperature field; Surface water–groundwater exchange; Seepage field
• ISSN: 1866-6280; 1866-6299
• DOI: 10.1007/s12665-023-10959-3

Surface water–groundwater exchange affects the material and energy transfer of rivers and adjacent riparian zones. As an intuitive carrier of energy, temperature can effectively reflect the spatial and temporal variation of surface water–groundwater exchange process. In this paper, the influence of water head variation and sand sample uniformity on its temperature field and seepage field is studied through a one-dimensional sand column laboratory test. To verify the accuracy of the one-dimensional vertical heat analysis model, the vertical seepage velocity measured in the indoor test is compared with the vertical submerged exchange rate calculated by the four analysis models. The results show that the Hatch analytical solution, Keery analytical solution, McCallum analytical solution and Luce analytical solution calculated by VFLUX2 through MATLAB are reliable for calculating the vertical undercurrent exchange rate of the heterogeneous sand column.