Investigation on the width-to-depth ratio effect on turbulent flows in a sharp meandering channel with periodic boundaries using Large Eddy Simulations

Investigation on the width-to-depth ratio effect on turbulent flows in a sharp meandering channel with periodic boundaries using Large Eddy Simulations | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Investigation on the width-to-depth ratio effect on turbulent flows in a sharp meandering channel with periodic boundaries using Large Eddy Simulations Bingchang Zhang, Dong Xu, Chunning Ji, Qihua Ran This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3862383/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 4 You are reading this latest preprint version Abstract As one of the most common river patterns in nature, meandering river has very complex flow structures in its curved channel bends, including secondary flow structure and primary flow velocity redistributions. To date, most of the studies have been carried out on the complex flow structures of a single channel bend with unavoidable influence, while the turbulent flow structures in periodic sharp meandering channels require further investigations. In this paper, Large Eddy Simulations (LES) are employed to reveal the flow structures of periodic sharp sine-generated bends with different width-to-depth ratios and dimensionless curvature radiuses. The results highlight the determining effects of width-to-depth ratio on recirculation zone’s size, the recirculation zone’s size is generally larger in Sine-Generated-Curve (SGC) Channel with large width-to-depth ratio, its size reaches maximum between the zero-curvature section and the apex section. The IBC (Inner bank cell) only forms in a small-sinuosity SGC channel with a small width-to-depth ratio, for SGC channel with large width-to-depth ratio, only one circulation cell is observed near the inner bank. The turbulent kinetic energy (TKE) is mainly influenced by width-to-depth ratio and dimensionless curvature radius. sine-generated bend large width-to-depth ratio Reynolds number Large Eddy Simulation turbulent structure Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 04 Feb, 2024 Reviewers invited by journal 24 Jan, 2024 Editor assigned by journal 23 Jan, 2024 First submitted to journal 15 Jan, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3862383","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":268982236,"identity":"8f58c861-3d15-4643-b827-b904defbf406","order_by":0,"name":"Bingchang Zhang","email":"","orcid":"","institution":"University of Western Australia","correspondingAuthor":false,"prefix":"","firstName":"Bingchang","middleName":"","lastName":"Zhang","suffix":""},{"id":268982237,"identity":"6db6a803-4155-494e-8123-7ebe720c92f9","order_by":1,"name":"Dong Xu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAxElEQVRIiWNgGAWjYHACAyC2YWBsAFI8JGhJkyBZy2EJMJMoLQY3kjc+Lvh1vo55RgLjg7dtDPLmhLRIzkgrNp7Zd1uCcUYCs+HcNgbDnQ0EtPBL5JhJ8/aAtbBJ87YxJBgcIKCFDaLlHEgL+2+itIBt4flxAGwLM1FaJHueFRvzNiRLNvY8bJacc07CcAMhLQbHgSHG88eO37A9+eCHN2U28gRtAQPGNgYGwwZwZEoQox4E/jAwyBOrdhSMglEwCkYeAAAlwTsRQQ7zFgAAAABJRU5ErkJggg==","orcid":"","institution":"Hohai University","correspondingAuthor":true,"prefix":"","firstName":"Dong","middleName":"","lastName":"Xu","suffix":""},{"id":268982238,"identity":"e748d85e-283c-45b4-b527-d16f1db55e05","order_by":2,"name":"Chunning Ji","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Chunning","middleName":"","lastName":"Ji","suffix":""},{"id":268982239,"identity":"ca302984-4d22-4639-9c65-7687efb054b2","order_by":3,"name":"Qihua Ran","email":"","orcid":"","institution":"Hohai University","correspondingAuthor":false,"prefix":"","firstName":"Qihua","middleName":"","lastName":"Ran","suffix":""}],"badges":[],"createdAt":"2024-01-14 06:30:37","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3862383/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3862383/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":50285416,"identity":"93f09221-a9ad-43b3-917e-cde017986402","added_by":"auto","created_at":"2024-01-29 06:30:04","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2706594,"visible":true,"origin":"","legend":"","description":"","filename":"LESRiverBends.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3862383/v1_covered_eb3225e5-a458-41b2-983b-026725145b1d.pdf"}],"financialInterests":"","formattedTitle":"Investigation on the width-to-depth ratio effect on turbulent flows in a sharp meandering channel with periodic boundaries using Large Eddy Simulations","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":true,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"journal-of-hydrodynamics","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"ijhd","sideBox":"Learn more about [Journal of Hydrodynamics](http://link.springer.com/journal/42241)","snPcode":"42241","submissionUrl":"https://www.editorialmanager.com/ijhd/default2.aspx","title":"Journal of Hydrodynamics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"sine-generated bend, large width-to-depth ratio, Reynolds number, Large Eddy Simulation, turbulent structure","lastPublishedDoi":"10.21203/rs.3.rs-3862383/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3862383/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eAs one of the most common river patterns in nature, meandering river has very complex flow structures in its curved channel bends, including secondary flow structure and primary flow velocity redistributions. To date, most of the studies have been carried out on the complex flow structures of a single channel bend with unavoidable influence, while the turbulent flow structures in periodic sharp meandering channels require further investigations. In this paper, Large Eddy Simulations (LES) are employed to reveal the flow structures of periodic sharp sine-generated bends with different width-to-depth ratios and dimensionless curvature radiuses. The results highlight the determining effects of width-to-depth ratio on recirculation zone\u0026rsquo;s size, the recirculation zone\u0026rsquo;s size is generally larger in Sine-Generated-Curve (SGC) Channel with large width-to-depth ratio, its size reaches maximum between the zero-curvature section and the apex section. The IBC (Inner bank cell) only forms in a small-sinuosity SGC channel with a small width-to-depth ratio, for SGC channel with large width-to-depth ratio, only one circulation cell is observed near the inner bank. The turbulent kinetic energy (TKE) is mainly influenced by width-to-depth ratio and dimensionless curvature radius.\u003c/p\u003e","manuscriptTitle":"Investigation on the width-to-depth ratio effect on turbulent flows in a sharp meandering channel with periodic boundaries using Large Eddy Simulations","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-01-29 06:21:52","doi":"10.21203/rs.3.rs-3862383/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2024-02-04T12:43:27+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2024-01-24T08:25:22+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2024-01-23T12:49:05+00:00","index":"","fulltext":""},{"type":"submitted","content":"Journal of Hydrodynamics","date":"2024-01-16T02:03:19+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"journal-of-hydrodynamics","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"ijhd","sideBox":"Learn more about [Journal of Hydrodynamics](http://link.springer.com/journal/42241)","snPcode":"42241","submissionUrl":"https://www.editorialmanager.com/ijhd/default2.aspx","title":"Journal of Hydrodynamics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"b5857d34-4873-47ac-a96e-cdefcf22e293","owner":[],"postedDate":"January 29th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2024-04-09T04:08:03+00:00","versionOfRecord":[],"versionCreatedAt":"2024-01-29 06:21:52","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-3862383","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-3862383","identity":"rs-3862383","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}