Experimental and simulation investigation of the intermittent gas flooding phenomenon within dynamic gas distribution impeller

Experimental and simulation investigation of the intermittent gas flooding phenomenon within dynamic gas distribution impeller | 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 simulation investigation of the intermittent gas flooding phenomenon within dynamic gas distribution impeller Can Zi, Xiaobang Liu, Huajie Liu, jianchang li This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7542011/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 A new type of gas-liquid mixing impeller, called the dynamic gas dispersion paddle, has been developed to meet the market demand for large-diameter impeller. The determination of the power number, relative power demand and gas holdup is based on experimental results. Moreover, unstable gas dispersion phenomenon, intermittent gas flooding, occurs in both the experimental and simulation processes. The interaction between the aeration gas from the gas channel and the inhaled liquid across suction port is unfavorable for gas dispersion, as indicated by the simulated gas stream traces. The interaction is considered the trigger for gas flooding. On the basis of the instability mechanism, the impeller has been modified to reduce the gas velocity at the gas channel outlet and shorten the distance between the gas channel outlet and the blade back. Experiments confirmed the elimination of intermittent flooding. stirred tank dynamic gas dispersion intermittent gas flooding simulation Full Text 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-7542011","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":513654774,"identity":"d66ba15d-5ffe-4927-af48-789d531febd1","order_by":0,"name":"Can Zi","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Can","middleName":"","lastName":"Zi","suffix":""},{"id":513654775,"identity":"6cd3e9ae-709b-42ab-b0fb-3410e402de91","order_by":1,"name":"Xiaobang Liu","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Xiaobang","middleName":"","lastName":"Liu","suffix":""},{"id":513654776,"identity":"3dcb139d-31e6-4a28-b8ff-13745d294caf","order_by":2,"name":"Huajie Liu","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Huajie","middleName":"","lastName":"Liu","suffix":""},{"id":513654777,"identity":"0206f210-3e3f-43a1-9ce0-9dd7445f7f07","order_by":3,"name":"jianchang li","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA20lEQVRIie3PoQ7CMBCA4VuaHKYZtgsLe4ViJnmWNUumIEFOTEAgrSD4KZ4BiaSmanjkprDFIRAkICHbcIh++v7cHYDj/CGMtLKWF1OMrrpO8qI78RmRXrkwqQ+zlNeV6U7GbCAJtcTbQxIHzYb0OGy0kk3JkSCcslwsEYZqm7QnoVbc8tBHb2Uu4hgCq86H9gTEMnhtIZBdRIXA2bw7GVFOPIkQL4QkPRIm5DuhEEO/hOr1pOQmRUZTllSGdv4SKdXU9lFMo3Kgb/e8GA/Vrj35QH8bdxzHcb56AoDRRe0vFVtNAAAAAElFTkSuQmCC","orcid":"","institution":"Tianjin University","correspondingAuthor":true,"prefix":"","firstName":"jianchang","middleName":"","lastName":"li","suffix":""}],"badges":[],"createdAt":"2025-09-05 07:59:02","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7542011/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7542011/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":92792167,"identity":"28df8ece-8750-43fe-b6ec-af0b1f9ae0aa","added_by":"auto","created_at":"2025-10-05 06:35:31","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1654862,"visible":true,"origin":"","legend":"","description":"","filename":"20250905Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7542011/v1_covered_bff60ea9-f671-40f3-96f7-e894e3544b24.pdf"}],"financialInterests":"","formattedTitle":"Experimental and simulation investigation of the intermittent gas flooding phenomenon within dynamic gas distribution impeller","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":"stirred tank, dynamic gas dispersion, intermittent gas flooding, simulation","lastPublishedDoi":"10.21203/rs.3.rs-7542011/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7542011/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eA new type of gas-liquid mixing impeller, called the dynamic gas dispersion paddle, has been developed to meet the market demand for large-diameter impeller. 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