An experimental study on near-field tip vortex of an elliptical hydrofoil using tomographic particle image velocimetry

An experimental study on near-field tip vortex of an elliptical hydrofoil using tomographic particle image velocimetry | 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 An experimental study on near-field tip vortex of an elliptical hydrofoil using tomographic particle image velocimetry Hang Zhao, Han Tu, Wenxuan She, Qi Gao, Yantao Cao, Xiaoxing Peng, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-2613746/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 05 Dec, 2023 Read the published version in Experiments in Fluids → Version 1 posted 8 You are reading this latest preprint version Abstract Volumetric measurement for the non-cavitating tip vortex in the near field of an elliptical hydrofoil is conducted using tomographic particle image velocimetry (TPIV), which provides a fully three-dimensional diagnose of the vortex formation and development. The wandering motion and flow properties of the near-field tip vortex under different incident angles and Reynolds numbers are investigated in detail. Unlike in the far field, the wandering motion in the near field is mainly subject to the local flow unsteadiness rather than the flow condition. By the "re-centered" post-processing, the deviations introduced by the wandering motion can be technically corrected, and more accurate vortex properties can be thus obtained. In the near field, a turning point of the vortex center trajectory is detected, the position of which is basically independent of the flow condition. By investigating the local flow properties, it is found that this turning point is the position where the tip vortex completely leaves the trailing edge of hydrofoil and enters the wake region. At this turning point, the external supply to the vortex core starts to be restricted, and the vortex circulation reaches a rather constant value. Further according to the local flow properties, the development process of the near-field tip vortex can be divided into three stages: vortex-attached stage, vortex-lifting stage and vortex-detached stage, which are found to be closely relevant to the hydrofoil configuration. tip vortex elliptical hydrofoil wandering motion circulation evolution tomographic PIV Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 05 Dec, 2023 Read the published version in Experiments in Fluids → Version 1 posted Editorial decision: Major revision 02 May, 2023 Reviews received at journal 04 Apr, 2023 Reviewers agreed at journal 21 Mar, 2023 Reviewers agreed at journal 07 Mar, 2023 Reviewers invited by journal 04 Mar, 2023 Editor assigned by journal 25 Feb, 2023 Submission checks completed at journal 24 Feb, 2023 First submitted to journal 21 Feb, 2023 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-2613746","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":178679395,"identity":"19d69c01-f19d-4348-bc74-327be109647a","order_by":0,"name":"Hang Zhao","email":"","orcid":"","institution":"Zhejiang University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Hang","middleName":"","lastName":"Zhao","suffix":""},{"id":178679397,"identity":"c362d2b0-2a1d-4419-987e-eaec93e67446","order_by":1,"name":"Han Tu","email":"","orcid":"","institution":"Zhejiang 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