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This study investigates the temporal evolution of local scour downstream of a weir under clear-water conditions. The research hypothesis assumes that the majority of scour develops during the initial flow phase and that the rate of scour is influenced by downstream flow velocity. Laboratory experiments were conducted on a 1 : 30 physical model of a damming weir, reproducing realistic sediment and structural conditions. Results show that, on average, 85–86% of the maximum scour depth forms within the first 0.5 h, while subsequent growth slows and stabilises near the final depth. Higher flow velocities accelerate initial scour development but have little effect on later stages. The study confirms the typical clear-water scour pattern and provides quantitative insights useful for assessing structural safety and designing bed protection measures downstream of weirs.
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Amin, A. M. A. (2015). Physical model study for mitigating local scour downstream of clear over-fall weirs. Ain Shams Engineering Journal, 6(4), 1143‒1150. https://doi.org/10.1016/j.asej.2015.03.013
Brath, A., & Montanari, A. (2000). Temporal evolution of local scour at bridge piers. Journal of Hydraulic Engineering, 126(10), 778‒782.
Ghani, A. A., & Mohammadpour, R. (2016). Temporal variation of clear-water scour at compound abutments. Ain Shams Engineering Journal, 7(4), 1045‒1052.
Graf, W. H. (1998). Fluvial hydraulics: flow and transport processes in channels of simple geometry. John Wiley & Sons.
Guan, D., Liu, J., Chiew, Y.-M., & Zhou, Y. (2019). Scour evolution downstream of submerged weirs in clear water scour conditions. Water, 11(9). https://doi.org/10.3390/w11091746
Guan, D., Melville, B., & Friedrich, H. (2014). Flow patterns and turbulence structures in a scour hole downstream of a submerged weir. Journal of Hydraulic Engineering, 140(1), 68‒76. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000803
Guan, D., Melville, B., & Friedrich, H. (2016). Local scour at submerged weirs in sand-bed channels. Journal of Hydraulic Research, 54(2), 172–184. https://doi.org/10.1080/00221686.2015.1132275
Hopfinger, E. J., Kurniawan, A., Graf, W. H., & Lemmin, U. (2004). Sediment erosion by Görtler vortices: The scour-hole problem. Journal of Fluid Mechanics, 520, 327‒342. https://doi.org/10.1017/S0022112004001636
İkincioğulları, E., Emiroğlu, M. E., & Aydın, M. C. (2026). Investigation of local scour at classical contracted rectangular weir downstream using CFD. Firat University Journal of Experimental and Computational Engineering, 5(1), 231‒249. https://doi.org/10.62520/fujece.1804990
Kiraga, M., Bajkowski, S., Urbański, J., & Siwicki, P. (2025). Experimental studies on the local scour development of the riverbed below the Piaseczno Weir. Water, 17(13), 1916. https://doi.org/10.3390/w17131916
Lantz, W. D., Crookston, B. M., & Palermo, M. (2022). Evolution of local scour downstream of Type A PK weir in non‑cohesive sediments. Journal of Hydrology and Hydromechanics, 70(1), 103‒113. https://doi.org/10.2478/johh-2021-0035
Majewska, L. (2025). Zmiany ukształtowania laboratoryjnego dna aluwialnego w warunkach przepływu ustalonego [Analysis of morphological alterations in laboratory alluvial bed during steady-state flow conditions] (Bachelor’s thesis). Szkoła Główna Gospodarstwa Wiejskiego w Warszawie.
Millar, B., Hamill, G., Taylor, S., & Robinson, D. (2024). ArchIMEDES: Computer vision tracking of the inherent changes to structural stability of masonry arch bridges resulting from increased bed scour. e-Journal of Nondestructive Testing, 29(7). https://doi.org/10.58286/29586
Panthi, M., Crookston, B. M., & Palermo, M. (2026). Scour evolution for steady and unsteady flow conditions downstream of Type A piano key weirs. Journal of Hydrology and Hydromechanics, 74(1), 20‒35. https://doi.org/10.2478/johh-2026-0003
Polski Komitet Normalizacyjny [PKN]. (2006). Badania geotechniczne. Oznaczanie i klasyfikowanie gruntów [Geotechnical investigation and testing. Identification and classification of soil] (PN-EN ISO 14688).
Tunas, M., Benmebarek, N., & Mohammed, A. (2024). Numerical investigation of local scour downstream of a weir. International Journal of Safety and Security Engineering, 14(2), 359‒370. https://doi.org/10.18280/ijsse.140220
Wang, L., Lu, W., Melville, B., Guan, D., & Whittaker, C. (2018). Local scour at downstream sloped submerged weirs. Journal of Hydraulic Engineering, 144, 04018029. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001492
Zhang, W., Nie, R., Liu, X.., Yang, S., & Wang, L. (2025). Clear-water scour depth at rock weirs under unsteady flows. Journal of Hydrology, 654, 132889. https://doi.org/10.1016/j.jhydrol.2025.132889
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