Abstract
The construction of wading piers can modify the water flow characteristics of the river, and the quantity of piers is one of the significant influencing factors. Development of numerical simulation study of various numbers of piers on river flow patterns has significant and profound relevance to river flooding and river stability. A GIS-based Mike21 hydrodynamic model of the lower Yellow River is constructed and applied to the two-dimensional hydrodynamic numerical simulation of the lower Yellow River cross-river bridge section. The effect of the number of bridge piers on the flow regime at different flows is studied, and the mechanisms of changes in flow field, congestion height, and velocity are analyzed. The results suggested that with the growth of the number of piers, the congestion height in front of the bridge increased, but the increase gradually decreased, dropping by 2.22% overall. The average flow rate in front of the bridge has declined, with a gradual reduction of 2.01%. The range of flow field changes gradually expanded; however, the speed of increase in the influence range reduced by 11.85%.
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The authors wish to thank the Key Scientific Research Project of Colleges and Universities in Henan Province (CN) [grant numbers 17A570004] for the collection, analysis and interpretation of data.
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Zhang, X., Lu, Y., Wu, X. et al. Simulation study on the influence of the number of bridge piers on the flow regime of the lower Yellow River. Arab J Geosci 16, 115 (2023). https://doi.org/10.1007/s12517-023-11197-4
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DOI: https://doi.org/10.1007/s12517-023-11197-4