Descriptions of Attack Angle and Ideal Lift Coefficient for Various Airfoil Profiles in Wind Turbine Blade

Descriptions of Attack Angle and Ideal Lift Coefficient for Various Airfoil Profiles in Wind 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 Descriptions of Attack Angle and Ideal Lift Coefficient for Various Airfoil Profiles in Wind Turbine Blade Jaegwi Go This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-665987/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 The angle of attack is highly sensitive to pitch point in the airfoil shape and the decline of pitch point value induces smaller angle of attack, which implies that airfoil profile possessing closer pitch point to the airfoil tip reacts more sensitively to upcoming wind. The method of conformal transformation functions is employed for airfoil profiles and airfoil surfaces are expressed with a trigonometric series form. Attack angle and ideal lift coefficient distributions are investigated for various airfoil profiles in wind turbine blade regarding conformal transformation and pitch point. The conformed angle function representing the surface angle of airfoil shape generate various attack angle distributions depending on the choice of surface angle function. Moreover, ideal attack angle and ideal lift coefficient are susceptible to the choice of airfoil profiles and uniform loading area. High ideal attack angle signifies high pliability to upcoming wind, and high ideal lift coefficient involves high possibility to generate larger electric energy. According to results obtained pitch point, airfoil shape, uniform loading area, and the conformed airfoil surface angle function are crucial factors in the determination of angle of attack. Computational Mathematics airfoil angle of attack conformal transformation mean line surface angle 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-665987","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":36067569,"identity":"c46c027e-4355-4aa3-9708-1ad288c449ac","order_by":0,"name":"Jaegwi Go","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA3klEQVRIiWNgGAWjYBACxgYg8YHhAJIQDxFaGGeQpAUEmHlI0sLcv/ziY5uaO/Lm/GsMHxcw2Mkz8Jx9gN9hM94UG+cce2a4c8YbY+MZDMmGDbztBgS0nEmTzm04zLjhxtlt0jwMzAkM/Gz4HQbWYtlw2B6qpZ4ILf3tx6QZGw4nbjjfC9JyOIGBt42QLTzMhj3HDidvuMH/2ZjH4LhhG88x/FoM+48/fPCj5rDthvPHEh/zVFTL8/OkEdAyIwcaPhIJQALIJuATBgZ5/uMPICz+A4TUjoJRMApGwUgFAM9ORyvqZgItAAAAAElFTkSuQmCC","orcid":"","institution":"Changwon National University","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Jaegwi","middleName":"","lastName":"Go","suffix":""}],"badges":[],"createdAt":"2021-06-28 07:29:12","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-665987/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-665987/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":13653448,"identity":"a9eb5711-73e7-4738-aa2b-efb5d61edcf2","added_by":"auto","created_at":"2021-09-17 09:53:25","extension":"pdf","order_by":2,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":467268,"visible":true,"origin":"","legend":"","description":"","filename":"AirfoilShape.pdf","url":"https://assets-eu.researchsquare.com/files/rs-665987/v1_covered.pdf"},{"id":10973003,"identity":"c07fb19b-c650-4f34-84e2-200bf54a9424","added_by":"auto","created_at":"2021-06-30 18:29:26","extension":"pdf","order_by":2,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":463810,"visible":true,"origin":"","legend":"","description":"","filename":"AirfoilShape.pdf","url":"https://assets-eu.researchsquare.com/files/rs-665987/v1_covered.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"\u003cp\u003eDescriptions of Attack Angle and Ideal Lift Coefficient for Various Airfoil Profiles in Wind Turbine Blade\u003c/p\u003e","fulltext":[{"header":"Full Text","content":"This preprint is available for \u003ca href='/article/rs-665987/latest.pdf' target='_blank'\u003edownload as a PDF\u003c/a\u003e."}],"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":false,"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":"airfoil, angle of attack, conformal transformation, mean line, surface angle","lastPublishedDoi":"10.21203/rs.3.rs-665987/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-665987/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe angle of attack is highly sensitive to pitch point in the airfoil shape and the decline of pitch point value induces smaller angle of attack, which implies that airfoil profile possessing closer pitch point to the airfoil tip reacts more sensitively to upcoming wind. The method of conformal transformation functions is employed for airfoil profiles and airfoil surfaces are expressed with a trigonometric series form. Attack angle and ideal lift coefficient distributions are investigated for various airfoil profiles in wind turbine blade regarding conformal transformation and pitch point. The conformed angle function representing the surface angle of airfoil shape generate various attack angle distributions depending on the choice of surface angle function. Moreover, ideal attack angle and ideal lift coefficient are susceptible to the choice of airfoil profiles and uniform loading area. High ideal attack angle signifies high pliability to upcoming wind, and high ideal lift coefficient involves high possibility to generate larger electric energy. According to results obtained pitch point, airfoil shape, uniform loading area, and the conformed airfoil surface angle function are crucial factors in the determination of angle of attack.\u003c/p\u003e","manuscriptTitle":"Descriptions of Attack Angle and Ideal Lift Coefficient for Various Airfoil Profiles in Wind Turbine Blade","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2021-06-30 18:29:20","doi":"10.21203/rs.3.rs-665987/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","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}}],"origin":"","ownerIdentity":"5bbb63fa-4f04-4ce7-9a21-78d2dd2e6d1c","owner":[],"postedDate":"June 30th, 2021","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":5392733,"name":"Computational Mathematics"}],"tags":[],"updatedAt":"2022-01-24T07:14:21+00:00","versionOfRecord":[],"versionCreatedAt":"2021-06-30 18:29:20","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-665987","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-665987","identity":"rs-665987","version":["v1"]},"buildId":"WrCJVZZCHTDjtuVLN7oU0","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}