Experimental and numerical study of enhanced composite cooling structure with ribs and pin-fins in a Heavy Duty Gas Turbine Blade

Experimental and numerical study of enhanced composite cooling structure with ribs and pin-fins in a Heavy Duty Gas Turbine Blade | 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 Experimental and numerical study of enhanced composite cooling structure with ribs and pin-fins in a Heavy Duty Gas Turbine Blade Longbing Hu, Wentao Wu, Hua Zhang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6100348/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In order to obtain high-efficiency heat transfer for heavy-duty gas turbines, the internal enhanced composite cooling of turbine blades has been investigated. The results of transient liquid crystal experiments indicate that as the Reynolds number increases, both continuous V-rib and broken V-rib exhibit stronger heat transfer performance, with the average heat transfer effect of continuous V-rib surpassing that of intermittent V-rib by approximately 6.4%. Subsequently, four V-rib structures including continuous, broken, and staggered configurations were analyzed using numerical simulation methods to demonstrate local three-dimensional turbulence characteristics and reveal the impact of V-rib parameter variations on heat transfer performance. The findings suggest that continuous V-rib exhibits superior Nusselt number, flow resistance, and comprehensive heat transfer performance compared to broken V-rib; while staggered V-rib demonstrates the highest flow resistance. enhanced heat transfer advanced cooling turbine blade ribs and cylinders heavy-duty gas turbine Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-6100348","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":441661783,"identity":"7f6e9b9d-b011-4e88-b7ff-9263b3780f00","order_by":0,"name":"Longbing Hu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA3klEQVRIie3RvQrCMBDA8ZNApsOuJ4r6CAdCVRB8lRShk4JjBweLooOKq5uv4OhYKHSKzo7tG+jmIPgxK6ZuDvnN9ye5BMCy/pB0JnFKfMfuNgtTFYzMSZESn1tDUWHoxZzqxJxUoV+n4Cw6DL5fyqYix8VAA59YYhO0G3hjCc58ob4nYhVlG0Zsh0v35O0rQPqwM5xyVA1iQojxmWgJTANT0ufyjRkhQXfozUS+hIgVspY+5Etej0wcYWkjYlI6QeMutfXrK29R16FCeLkGo6ozX31P3uBv45ZlWdZHD1D+Rp9fXqVpAAAAAElFTkSuQmCC","orcid":"","institution":"","correspondingAuthor":true,"prefix":"","firstName":"Longbing","middleName":"","lastName":"Hu","suffix":""},{"id":441661784,"identity":"959009cf-e989-4256-9feb-515ea7d85b44","order_by":1,"name":"Wentao Wu","email":"","orcid":"","institution":"","correspondingAuthor":false,"prefix":"","firstName":"Wentao","middleName":"","lastName":"Wu","suffix":""},{"id":441661785,"identity":"e95b4742-8367-40e1-b680-eaed4a2b11e3","order_by":2,"name":"Hua Zhang","email":"","orcid":"","institution":"","correspondingAuthor":false,"prefix":"","firstName":"Hua","middleName":"","lastName":"Zhang","suffix":""}],"badges":[],"createdAt":"2025-02-25 01:08:07","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6100348/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6100348/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":83979546,"identity":"5b764da4-43c6-4f96-b19c-3e2c46ca6f1b","added_by":"auto","created_at":"2025-06-05 09:39:15","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1314070,"visible":true,"origin":"","legend":"","description":"","filename":"RevisedManuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6100348/v1_covered_57aa0f39-29b8-4763-9429-71396a8e756b.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Experimental and numerical study of enhanced composite cooling structure with ribs and pin-fins in a Heavy Duty Gas Turbine Blade","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"enhanced heat transfer, advanced cooling, turbine blade, ribs and cylinders, heavy-duty gas turbine","lastPublishedDoi":"10.21203/rs.3.rs-6100348/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6100348/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn order to obtain high-efficiency heat transfer for heavy-duty gas turbines, the internal enhanced composite cooling of turbine blades has been investigated. 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