Journal of Hydraulic Research最新文献

{"title":"Air entrapment modelling during pipe filling based on SWMM","authors":"João Paulo Ferreira, David Ferràs, Dídia I. C. Covas, Job Augustijn van der Werf, Zoran Kapelan","doi":"10.1080/00221686.2024.2305354","DOIUrl":"https://doi.org/10.1080/00221686.2024.2305354","url":null,"abstract":"The paper proposes a novel methodology to locate and quantify entrapped air pockets created during pipe-filling events often found in intermittent water supply systems. Different filling conditions...","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139754761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and numerical investigation of a small scale storm sewer geyser","authors":"Pratik Mahyawansi, Sumit R. Zanje, Abbas Sharifi, Dwayne McDaniel, Arturo S. Leon","doi":"10.1080/00221686.2024.2305353","DOIUrl":"https://doi.org/10.1080/00221686.2024.2305353","url":null,"abstract":"The violent nature of storm sewer geysers has been puzzling researchers worldwide for a very long time. This paper investigates the geyser simulation methodology using a small-scale set-up, where i...","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139902716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulations of scalar transport in oscillatory flow over a wavy wall","authors":"Edwin R. Aponte-Cruz, Sylvia Rodríguez-Abudo","doi":"10.1080/00221686.2023.2298403","DOIUrl":"https://doi.org/10.1080/00221686.2023.2298403","url":null,"abstract":"A three-dimensional model that couples Reynolds–averaged Navier–Stokes equations with an advection–diffusion solver for flow and concentration fields over a fixed, non-permeable boundary is present...","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139754758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transient-based multiple branch detection in reservoir pipeline valve systems","authors":"Dongwon Ko, Jeongseop Lee, Sanghyun Kim","doi":"10.1080/00221686.2023.2294713","DOIUrl":"https://doi.org/10.1080/00221686.2023.2294713","url":null,"abstract":"Efficient management of pipeline assets is crucial for a reliable urban water supply. Unknown side branches in pipeline systems can hinder the prediction of hydraulic transients, owing to unexpecte...","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139754606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of inflow conditions on the free-surface properties of hydraulic jumps By STEFAN FELDER, LAURA MONTANO, HANWEN CUI, WILLIAM PEIRSON and MATTHIAS KRAMER, J. Hydraulic Res. 59(6), 2021, 1004–1017, https://doi.org/10.1080/00221686.2020.1866692","authors":"Discussers: Masayuki Takahashi, Ryugen Satoh, Iwao Ohtsu","doi":"10.1080/00221686.2023.2283351","DOIUrl":"https://doi.org/10.1080/00221686.2023.2283351","url":null,"abstract":"Published in Journal of Hydraulic Research (Vol. 61, No. 6, 2023)","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138574620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Closure to “Effect of inflow conditions on the free-surface properties of hydraulic jumps” by S. FELDER, L. MONTANO, H. CUI, W. PEIRSON, and M. KRAMER, J. Hydraulic Res. 59(6), 2021, 1004–1017, https://doi.org/10.1080/00221686.2020.1866692","authors":"Stefan Felder, Laura Montano, Hanwen Cui, Matthias Kramer","doi":"10.1080/00221686.2023.2265877","DOIUrl":"https://doi.org/10.1080/00221686.2023.2265877","url":null,"abstract":"Published in Journal of Hydraulic Research (Vol. 61, No. 6, 2023)","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138574627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of asymmetric gravity current collision with LES","authors":"Angelos Kokkinos, Panagiotis Prinos","doi":"10.1080/00221686.2023.2267012","DOIUrl":"https://doi.org/10.1080/00221686.2023.2267012","url":null,"abstract":"AbstractThis study presents LES results of two colliding gravity currents, with different densities and/or heights, in a half-depth lock-exchange set-up. The dynamical features of collision for gravity currents with different densities and heights, the post-collision motion and the mixing are examined for the first time. It is found that the maximum height of the displaced fluid depends on the gravity currents heights difference, while it is not affected by their density difference. Maximum vertical velocity during collision depends on both height and density difference and decreases with increasing asymmetry. Post-collision phase consists of two counterflowing bores with almost constant velocities and heights with time. When the collided gravity currents have considerably different densities or heights only one bore emerges after collision. Bore velocities agree relatively well with the hydraulic theory of gravity currents collision with different heights. Mixing is enhanced during collision consuming approximately 20% of the total consumed system energy.Keywords: Collisiongravity currentslarge-eddy simulationlock-exchangemixing AcknowledgementsThe simulations for this work have been performed using the Aristotle University of Thessaloniki (AUTh) High Performance Computing Infrastructure and Resources.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis project is part of the first author’s doctoral thesis. The implementation of the doctoral thesis is co-financed by Greece and the European Union (European Social Fund-ESF) through the Operational Programme «Human Resources Development, Education and Lifelong Learning» in the context of the Act “Enhancing Human Resources Research Potential by undertaking a Doctoral Research” Sub-action 2: IKY Scholarship Programme for PhD candidates in the Greek Universities; State Scholarships Foundation.","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136347603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental investigation of the hydrodynamic field around a half-cone woody debris jam on a bridge pier","authors":"Wenjun Zhang, Colin D. Rennie, Ioan Nistor","doi":"10.1080/00221686.2023.2259859","DOIUrl":"https://doi.org/10.1080/00221686.2023.2259859","url":null,"abstract":"ABSTRACTA debris jam causes extra load and associated scour on a bridge pier, and this significantly affects the safety of the bridge. Laboratory experiments were conducted to investigate the flow field around half-cone shaped debris jams of equal size, following the geometry in previous field studies, but with different surface roughness. The debris jams were assembled using dowels or by 3D printing. The results indicate three zones were observed behind the debris jam: the wake dead zone, high shear transition zone, and accelerated high-speed zone. A debris jam enlarges the dead zone while Reynolds shear stress was greatest in the transition zone for all debris jam cases. Additionally, the drag coefficient of debris jams built by dowels was greater compared with the 3D-printed debris jam, attributed to the debris jam roughness. In summary, debris jams form the wake dead zone behind the pier, increase downward flow in front of the pier, and enhance flow acceleration around the pier, highlighting the potential hazards to bridge safety.Keywords: Debris jamdrag coefficientflow fieldReynolds shearsingle pier Supplemental dataSupplemental data for this article can be accessed online at https://doi.org/10.1080/00221686.2023.2259859.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe first author would thank the joint financial support provided by the China Scholarship Council and the University of Ottawa. Additional fundings from the NSERC Discovery grants held by Colin Rennie and Ioan Nistor are also acknowledged.","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135633981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gravity currents from a constant inflow on unbounded uniform slopes","authors":"Ching-Sen Wu, Albert Dai","doi":"10.1080/00221686.2023.2267511","DOIUrl":"https://doi.org/10.1080/00221686.2023.2267511","url":null,"abstract":"AbstractIn this study we conducted laboratory experiments to examine the gravity currents produced from a constant inflow propagating on unbounded uniform slopes in the range 0∘≤θ≤15∘. In the experiments, the inlet Reynolds number and the slope angle were varied systematically. The study carried out dimensional analysis and quantified five dimensionless parameters, thereby characterizing the development of gravity currents. Top-view images shown in the experiments exhibited gravity currents in an elongated shape when propagating on steeper slopes larger than 6∘ but a round shape on milder slopes less than 3∘. The study finds that the five dimensionless parameters, which are functions of the slope angle, have near constant values for sufficiently large inlet Reynolds number, suggesting that the flow is approaching the regime of Reynolds number independence. The results from our experiments are expected to be applicable to gravity currents produced from a constant inflow on unbounded uniform slopes in larger scale natural or man-made environments.Keywords: Constant inflowdimensional analysisgravity currentsinclined bottomlaboratory experiments AcknowledgmentsThe authors would like to thank Mr L.-C. Hsu and Mr Y.-A. Li for help in running the experiments.Disclosure statementNo potential conflict of interest was reported by the author(s).Notationbmax=maximum width of spreading gravity currents (cm)b0=width of diffuser (cm)h=maximum head height (cm)h0=height of diffuser (cm)g=gravitational acceleration (cms−2)g′=reduced gravity (cms−2)Q0=volumetric inflow rate (cm3s−1)Re=Reynolds number (–)t=time (s)uf=front velocity of gravity currents (cms−1)Wp=buoyancy flux (cm4s−3)xf=front location (cm)xf,v=distance between the virtual origin and the front (cm)ν=kinematic viscosity of fluid (cm2s−1)π1=shape factor of the gravity currents in the spanwise direction (–)π2=shape factor of the gravity currents in the wall-normal direction (–)π3=dimensionless parameter relating front location and time (–)π4=dimensionless parameter relating maximum width and time (–)π5=dimensionless parameter relating the density difference in the head and front location (–)ρ0=density of ambient fluid (gcm−3)ρ1=density of inflow heavy fluid (gcm−3)θ=slope angle (–)Δρ=density excess of inflow heavy fluid (gcm−3)Δρf=density excess of the fluid in the head of the gravity currents (gcm−3)Additional informationFundingThe research was funded by National Taiwan University through grants 106R7739, 106R7830, 107L7830, 107L7734, 112L7826 and by Taiwan National Science and Technology Council through grants 107-2221-E-197-009, 108-2221-E-197-001-MY2, 111-2221-E-002-113-MY3.","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135589665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Finite volume analysis of dam breaking subjected to earthquake accelerations","authors":"Farshid Mosaddeghi, Mete Koken, Ismail Aydin","doi":"10.1080/00221686.2023.2259858","DOIUrl":"https://doi.org/10.1080/00221686.2023.2259858","url":null,"abstract":"AbstractBecause of the complexity of the dam failure mechanism due to earthquakes that occur under the simultaneous influence of hydraulic and seismic forces, a single model has not been obtained so far and this study was conducted to achieve this model. In this paper, dam failure models including both sudden and gradual failure have been investigated using volume of fluid techniques (VOF) to simulate water fluxes, general moving object (GMO) to simulate moving bodies, and the fluid–structure interaction model for finite volume analysis. In order to be sure of the accuracy of the results, before examining the failure mechanisms, the verifications of utilized methods in the case of dam failure were proven using experimental and numerical studies from literature. The Koyna Dam earthquake of magnitude 6.5 (11 December 1967) is investigated as a test case. Comparison of the output discharges due to dam failure in the two failure models reveals that the peak discharge of sudden failure is recorded three times faster than the gradual failure mode. Another achievement that should be mentioned is that although large oscillating periods carry a higher risk of cracking of the dam’s body, smaller periods propagate the resulting cracks more rapidly.Keywords: Flood riskfluid–particle interactionshydraulic modelslakes and reservoirsRANS models Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementAll numerical data presented in this study are available from the corresponding author upon reasonable request. Supplementary studies are available to the public at the following address in the doctoral dissertation of the first author of the article: https://hdl.handle.net/11511/93072","PeriodicalId":54802,"journal":{"name":"Journal of Hydraulic Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135819201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}