Variable resolution in scale-resolved simulations of turbulence

Variable resolution in scale-resolved simulations of turbulence | 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 Variable resolution in scale-resolved simulations of turbulence Magnus Carlsson, Stefan Wallin, Sharath Girimaji This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4180464/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 03 Oct, 2024 Read the published version in Flow, Turbulence and Combustion → Version 1 posted 9 You are reading this latest preprint version Abstract A new formulation for scale-resolved simulations of turbulence with variable resolution (VR) is proposed. A delayed detached-eddy simulation (DDES) model based on the k − ω framework is extended with VR-terms representing the commutation terms arising from variable resolution defined in terms of the DDES length scale. The VR-terms are responsible for the exchange of turbulence kinetic energy between the resolved and unresolved partitioning of the computational representation of turbulent flow. The new formulation is implemented in a general-purpose CFD code and applied on two cases, namely, a mixing shear layer and a wall-mounted hump and have been compared with and combined with the baseline model and two additional grey-area mitigation (GAM) formulations. The proposed method is shown to provide the mechanism for the exchange of energy between unresolved and resolved representation of the flow and to enhance the transition from modelled to resolved turbulence and thus improve the prediction of the resolved Reynolds stresses, development of the vorticity thickness for the shear layer flow and the skin friction recovery length for the hump flow. Hybrid RANS-LES Variable resolution Grey-area mitigation Scale-resolved simulation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 03 Oct, 2024 Read the published version in Flow, Turbulence and Combustion → Version 1 posted Editorial decision: Revision requested 22 May, 2024 Reviews received at journal 03 May, 2024 Reviews received at journal 30 Apr, 2024 Reviewers agreed at journal 15 Apr, 2024 Reviewers agreed at journal 15 Apr, 2024 Reviewers invited by journal 12 Apr, 2024 Editor assigned by journal 04 Apr, 2024 Submission checks completed at journal 03 Apr, 2024 First submitted to journal 28 Mar, 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-4180464","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":287608999,"identity":"25fc7304-4707-437a-ab04-8851cfd75371","order_by":0,"name":"Magnus Carlsson","email":"data:image/png;base64,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","orcid":"","institution":"Saab (Sweden)","correspondingAuthor":true,"prefix":"","firstName":"Magnus","middleName":"","lastName":"Carlsson","suffix":""},{"id":287609000,"identity":"cb4f669b-ae5c-4231-b5d1-eaba5ec770d7","order_by":1,"name":"Stefan Wallin","email":"","orcid":"","institution":"KTH Royal Institute of Technology","correspondingAuthor":false,"prefix":"","firstName":"Stefan","middleName":"","lastName":"Wallin","suffix":""},{"id":287609001,"identity":"5e44d59a-194d-4bd5-8acc-49d1b333eca1","order_by":2,"name":"Sharath Girimaji","email":"","orcid":"","institution":"Texas A\u0026M University","correspondingAuthor":false,"prefix":"","firstName":"Sharath","middleName":"","lastName":"Girimaji","suffix":""}],"badges":[],"createdAt":"2024-03-28 07:53:04","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4180464/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4180464/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s10494-024-00591-x","type":"published","date":"2024-10-03T15:58:23+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":66097485,"identity":"f9d2633d-4076-41f2-8ac5-3dfb51d2337b","added_by":"auto","created_at":"2024-10-07 16:14:23","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1211816,"visible":true,"origin":"","legend":"","description":"","filename":"FTac2024VariableResolutionV3.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4180464/v1_covered_0a945fe3-8a9a-453b-a476-97f2d67930c9.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Variable resolution in scale-resolved simulations of turbulence","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":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"flow-turbulence-and-combustion","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"appl","sideBox":"Learn more about [Flow, Turbulence and Combustion](http://link.springer.com/journal/10494)","snPcode":"10494","submissionUrl":"https://submission.nature.com/new-submission/10494/3","title":"Flow, Turbulence and Combustion","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Hybrid RANS-LES, Variable resolution, Grey-area mitigation, Scale-resolved simulation","lastPublishedDoi":"10.21203/rs.3.rs-4180464/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4180464/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eA new formulation for scale-resolved simulations of turbulence with variable resolution (VR) is proposed. 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