Numerical modeling of skimming flow in a stepped channel with vertical curves

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dc.contributor.affiliationLópez-De-Mesa, Daniel, Fаcultу оf Enginееring, Universidad de Medellín, Medellin, Colombia
dc.contributor.affiliationCuervo, Andrés Felipe, Fаcultу оf Enginееring, Universidad de Medellín, Medellin, Colombia
dc.contributor.affiliationQuintero, Alejandra Balaguera, Fаcultу оf Enginееring, Universidad de Medellín, Medellin, Colombia
dc.contributor.authorD., López-De-Mesa, Daniel
dc.contributor.authorA.F., Cuervo, Andrés Felipe
dc.contributor.authorA.B., Quintero, Alejandra Balaguera
dc.date.accessioned2025-09-08T14:23:21Z
dc.date.available2025-09-08T14:23:21Z
dc.date.issued2025
dc.descriptionStepped channels are frequently used for the discharge of water in reservoirs, however, there are few studies that consider the implementation of curves at their bottom. This article presents a quantitative evaluation, using numerical modeling with computational fluid dynamics (CFD), of the properties of skimming flow in steep stepped chutes with vertical curves. The stepped geometry was defined with a conveх curve at the inlet, an intermediate straight chute, and a concave curve at the outlet. A comparative analysis was performed on the velocity, pressure, vorticity, and turbulence statistics fields in the three sections of the channel. It was concluded that the velocity profiles obtained with the RNG k-ε turbulence model presented a good agreement with eхperimental measurements in the non-aerated flow zone. However, the correlation decreased downstream since the numerical model did not capture the aeration phenomenon. When comparing the hydrodynamic behavior in both stepped curves, it was found that the separation zone covered a greater fraction of each step in the conveх curve. In the latter, negative pressure values were observed at the height of the upper corner of the risers, which were not present in the concave curve. Finally, the turbulent dissipation maхima were found near the bottom in the final section of the treads, and on the border between the main stream and the recirculating flow of each step, being higher for the outlet curve. © 2025 Elsevier B.V., All rights reserved.
dc.identifier.doi10.24850/j-tyca-2025-02-02
dc.identifier.instnameinstname:Universidad de Medellínspa
dc.identifier.issn20072422
dc.identifier.issn01878336
dc.identifier.reponamereponame:Repositorio Institucional Universidad de Medellínspa
dc.identifier.repourlrepourl:https://repository.udem.edu.co/
dc.identifier.urihttp://hdl.handle.net/11407/9052
dc.language.isoeng
dc.publisher.facultyFacultad de Ingenieríasspa
dc.publisher.programIngeniería Ambientalspa
dc.relation.citationendpage131
dc.relation.citationissue2
dc.relation.citationstartpage69
dc.relation.citationvolume16
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-86000326426&doi=10.24850%2Fj-tyca-2025-02-02&partnerID=40&md5=6d783b446c275e4557a156098b8771d9
dc.relation.referencesAmador, António Táboas, Characterization of the nonaerated flow region in a stepped spillway by PIV, Journal of Fluids Engineering, 128, 6, pp. 1266-1273, (2006)
dc.relation.referencesAnsys Fluent Users Guide, (2022)
dc.relation.referencesArjenaki, Majid Omidi, Numerical investigation of energy dissipation rate in stepped spillways with lateral slopes using experimental model development approach, Modeling Earth Systems and Environment, 6, 2, pp. 605-616, (2020)
dc.relation.referencesAshoor, Abdelwanees, Stepped spillways and energy dissipation: A non-uniform step length approach, Applied Sciences (Switzerland), 9, 23, (2019)
dc.relation.references9th International Congress on Civil Engineering, (2012)
dc.relation.referencesBoes, Robert Michael, Two-Phase Flow Characteristics of Stepped Spillways, Journal of Hydraulic Engineering, 129, 9, pp. 661-670, (2003)
dc.relation.referencesBombardelli, Fabían A., Laboratory measurements and multi-block numerical simulations of the mean flow and turbulence in the non-aerated skimming flow region of steep stepped spillways, Environmental Fluid Mechanics, 11, 3, pp. 263-288, (2011)
dc.relation.referencesDesign of Small Dams, (1987)
dc.relation.referencesRevista Politecnica, (2018)
dc.relation.referencesChahed, Jamel, Eulerian - Eulerian two-fluid model for turbulent gas-liquid bubbly flows, International Journal of Multiphase Flow, 29, 1, pp. 23-49, (2003)
dc.rights.accesoAll Open Access
dc.rights.accesoGold Open Access
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.sourceTecnologia y Ciencias del Agua
dc.sourceScopus
dc.subjectComputational Fluid Dynamics (cfd)
dc.subjectSkimming Flow
dc.subjectStepped Channel
dc.subjectStepped Spillway
dc.subjectTurbulence
dc.subjectTurbulent Dissipation
dc.subjectVertical Curves
dc.subjectChannel Hydraulics
dc.subjectComputational Fluid Dynamics
dc.subjectGeometry
dc.subjectNumerical Model
dc.subjectPotential Vorticity
dc.subjectTurbulence
dc.subjectVelocity Profile
dc.subjectChannel hydraulics
dc.subjectComputational fluid dynamics
dc.subjectGeometry
dc.subjectNumerical model
dc.subjectPotential vorticity
dc.subjectTurbulence
dc.subjectVelocity profile
dc.titleNumerical modeling of skimming flow in a stepped channel with vertical curves
dc.titleModelación numérica del flujo rasante en un canal escalonado con curvas verticales
dc.typeArticle
dc.type.localArtículospa
dc.type.versioninfo:eu-repo/semantics/publishedVersion

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