Influence of Vertical Baffles on the Motion of Gas and Particles in Gas-Solid Fluidized Beds

Influence of Vertical Baffles on the Motion of Gas and Particles in Gas-Solid Fluidized Beds | 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 Influence of Vertical Baffles on the Motion of Gas and Particles in Gas-Solid Fluidized Beds Zhiqiang Ma, Xiuxun Hao, Fei Gao, Junling Fan, Pan Zhang, Guanghui Chen This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9337932/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 4 You are reading this latest preprint version Abstract This work investigates the influence of vertical baffles on gas–solid hydrodynamics in fluidized beds incorporating finger-shaped and U-shaped heat exchange tubes. A dual-particle-phase model (DDPM), integrating Eulerian and discrete solid phases, was applied to simulate four fluidized bed configurations under a superficial gas velocity of 0.24 m/s. Key parameters - such as gas flow structure, vortex characteristics, bubble dynamics, gas holdup, flow uniformity, and particle transport - were analyzed to evaluate fluidization quality. The results demonstrate that vertical baffles significantly disrupt horizontal gas flows, enhance vortex generation, and improve gas-solid mixing. In finger-shaped tube configurations, baffles notably increased bubble surface area by 8.22%, bed expansion height by 3.2%, and reduced axial and radial non-uniformity indices by 18.0% and 4.8%, respectively. In U-shaped tube configurations, baffles primarily improved radial gas–solid uniformity and enhanced overall particle circulation. Comparative findings suggest that the synergistic combination of vertical baffles and finger-shaped heat exchange tubes offers superior fluidization performance and mass/heat transfer potential. Gas-solid fluidized bed Bubble dynamics Vertical baffles Dense Discrete Phase Model (DDPM) Heat exchange tube Full Text Supplementary Files SupplementaryInformationA.docx Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 13 Apr, 2026 Reviewers invited by journal 13 Apr, 2026 Editor assigned by journal 09 Apr, 2026 First submitted to journal 06 Apr, 2026 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. 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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-9337932","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":622304593,"identity":"7d66a645-5b67-451d-97b0-02d6860c7697","order_by":0,"name":"Zhiqiang Ma","email":"","orcid":"","institution":"Qingdao University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Zhiqiang","middleName":"","lastName":"Ma","suffix":""},{"id":622304594,"identity":"9848ced9-4e60-4f6d-bdff-49bbb2ef7485","order_by":1,"name":"Xiuxun Hao","email":"","orcid":"","institution":"Qingdao University of Science and 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A dual-particle-phase model (DDPM), integrating Eulerian and discrete solid phases, was applied to simulate four fluidized bed configurations under a superficial gas velocity of 0.24 m/s. Key parameters - such as gas flow structure, vortex characteristics, bubble dynamics, gas holdup, flow uniformity, and particle transport - were analyzed to evaluate fluidization quality. The results demonstrate that vertical baffles significantly disrupt horizontal gas flows, enhance vortex generation, and improve gas-solid mixing. In finger-shaped tube configurations, baffles notably increased bubble surface area by 8.22%, bed expansion height by 3.2%, and reduced axial and radial non-uniformity indices by 18.0% and 4.8%, respectively. In U-shaped tube configurations, baffles primarily improved radial gas\u0026ndash;solid uniformity and enhanced overall particle circulation. Comparative findings suggest that the synergistic combination of vertical baffles and finger-shaped heat exchange tubes offers superior fluidization performance and mass/heat transfer potential.\u003c/p\u003e","manuscriptTitle":"Influence of Vertical Baffles on the Motion of Gas and Particles in Gas-Solid Fluidized Beds","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-22 19:20:49","doi":"10.21203/rs.3.rs-9337932/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2026-04-13T13:11:07+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-04-13T12:49:15+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-04-09T07:41:23+00:00","index":"","fulltext":""},{"type":"submitted","content":"Korean Journal of Chemical Engineering","date":"2026-04-06T21:08:13+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"korean-journal-of-chemical-engineering","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"kjce","sideBox":"Learn more about [Korean Journal of Chemical Engineering](http://link.springer.com/journal/11814)","snPcode":"11814","submissionUrl":"https://www.editorialmanager.com/kjce/default2.aspx","title":"Korean Journal of Chemical Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Subscription","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"1548940d-977d-4dc6-952f-6501b695f37e","owner":[],"postedDate":"April 22nd, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-22T19:20:49+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-22 19:20:49","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9337932","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9337932","identity":"rs-9337932","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}