IMPROVING THE HYDRAULIC CALCULATION METHOD FOR DEFORMATIONS IN THE CONFLUENCE ZONE OF CHANNEL FLOWS
Keywords:
Open channel confluence, hydraulic parameters, flow kinematics, bed deformation, sediment transport, recirculation zone, empirical modelsAbstract
This study investigates the kinematic structure and hydraulic parameters of open channel flow confluences, focusing on deformations in erodible beds. Laboratory experiments were conducted on a scaled model of the Mirishkor Canal confluence, analyzing flow velocities, depths, and sediment transport under varying confluence angles (30°, 45°, 60°). Empirical relationships were derived for post-confluence flow rates, velocities, recirculation zone dimensions, and sediment discharge. Results show that confluence angle significantly influences flow kinematics and bed deformations, with higher angles leading to larger recirculation zones and reduced sediment transport. Proposed calculation algorithms enhance predictive accuracy for hydraulic design in irrigation systems. Comparisons with existing models (e.g., Taylor, Van Rijn) validate the findings, offering improved tools for managing channel stability.
References
Best, J.L. (1987). Flow dynamics at river channel confluences: Implications for sediment transport and bed morphology. Recent Developments in Fluvial Sedimentology, 27-35.
Rhoads, B.L., & Kenworthy, S.T. (1995). Flow structure at an asymmetrical stream confluence. Geomorphology, 11(4), 273-293.
Mosley, M.P. (1976). An experimental study of channel confluences. The Journal of Geology, 84(5), 535-562.
Leite Ribeiro, M., et al. (2012). Morphodynamics of channel confluences: Experimental evidence. Journal of Hydraulic Research, 50(4), 404-413.
Biron, P.M., & Lane, S.N. (2008). Modelling hydraulics and sediment transport at river confluences. River Confluences, Tributaries and the Fluvial Network, 17-43.
Shields, A. (1936). Application of similarity principles and turbulence research to bed-load movement. Mitteilungen der Preußischen Versuchsanstalt für Wasserbau und Schiffbau, 26.
Van Rijn, L.C. (1984). Sediment transport, part I: Bed load transport. Journal of Hydraulic Engineering, 110(10), 1431-1456.
Taylor, E.H. (1944). Flow characteristics at rectangular open-channel junctions. Transactions of the American Society of Civil Engineers, 109(1), 893-902.
Latipov, Sh.A. (Year). Relevant reference from dissertation.(Note: Full references adapted from dissertation citations [13,27-35; 51; 57; 58; 60; 64; 70; 75; 78; 80; 84; 149]. Tables and figures referenced correspond to dissertation elements; in a real submission, include actual visuals.)
Xolmamatov I.K., Choriyevich, S.F Sug'orish kanallarida qirg'oq deformasiyasini gidravlik baholashni yaxshilashtirish va qayta qurish parametrlarini optimallashtirish (Amu-Buxoro mashina kanalining amaliy o'rganishi) 2025 6-b.
Bazarov, O., Babajanov, Y., Eshev, S., & Xolmamatov, I. (2023). OQIMLARNING QOʻSHILISH ZONASIDAGI DEFORMATSIYA JARAYONINI TADQIQ QILISH. Innovatsion texnologiyalar , 52 (3).
Bazarov, O., Babajanov, Y., Eshev, S., & Kholmamatov, I. (2024). STUDYING THE PROCESS OF DEFORMATION IN THE FLOW MERGER ZONE. Innovatsion Texnologiyalar , 52(3). Retrieved from https://ojs.qmii. uz/index.php/it/article/view/594
Bazarov, O.; Babazhanova, I.; Babazhanov, Y.; Eshev, S.; Kholmamatov, I.; Ruzieva,G. E3S Web of Conferences 2023 CONTRIBUTORS:Conference paper DOI: 10.1051/e3sconf/202341005021Part of ISSN: 22671242 255504032 EID: -s2.0-85170400505
S.S.Еshеv, IХ.Gаyimnаzаrоv, Sh.А Lаtiроv, M.I.Rаhmаtоv, I.K. Khоlmаmаtоv (March 2023). Calculation of the parameters of underground ridges in the steady flow of groundwater channels. In Proceedings of the AIR Conference (Volume 2612, Issue 1). AIR Publishing.
Bаzаrоv О.Sh, Bаbаjаnоv Y.T, Еshеv S.S, Khоlmаmаtоv I.K. innovation technologies: Investigating the Deformation Process in the Flow Merging Zone.
Sh.Lаtiроv, J.Sаgdiyеv, S.Еshеv, I.Khоlmаmаtоv, I.Rаyimоvа, Acceptable water flow velocity in sandy channels. E3S Web Conf. Volume 274, 2021. In 2nd International Scientific Conference on Socio-Technical Construction and Construction (STCCE–2021). Paper (No. 03002).
J.K.Krijеr, B.Hillеn. (1990) Stеddy twо-dimеnsiоnаl mеrging flоw frоm twо chаnnеls intо а singlcаnnаliАрlе. Sciеntific Rеs. 47(3), 223-246.
