Arrangement and feedback effects of droplet swarms in a parallel microchannel device

Arrangement and feedback effects of droplet swarms in a parallel microchannel device | 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 Arrangement and feedback effects of droplet swarms in a parallel microchannel device Shouchuan Li, Chengxiang He, Zhongdong Wang, Chunying Zhu, Youguang Ma, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3839957/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 Droplet swarms are the dominant form of highly dispersed microdroplets in cavities. In the self-assembly of droplet swarms, the continuous phase tends to flow in the path of the minimum resistance, the arrangement of the droplet swarms tends to minimize the potential energy, and the two mechanisms compromise in competition. In this paper, whether droplet swarms can timely adjust the morphology is measured by the ratio of the average flow rate of the two-phase flow to that of the droplet swarms, so as to clarify the dominant mechanism of the arrangement of droplet swarms. The arrangement of droplet swarms dominated by different mechanisms and the distribution of that are introduced, and the prediction method for the arrangement of droplet swarms is proposed. The mechanism of the breakup of the microdroplet in the cavity is elucidated, and three modes of the breakup in the cavity are introduced. Furthermore, a resistance model for the microdevice is established to quantify the fluctuations of the pressure difference and the flow rate caused by the formation of droplet swarms. The influence of the feedback effects of droplet swarms on the uniformity of droplet formation and flow patterns is analyzed, indicating the ideal flow range for the formation of highly dispersed droplets in microchannels. This paper clarifies the arrangement and feedback effects of droplet swarms, which will guide the application of microdevices in reaction and mass transfer processes. 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. 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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-3839957","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":265588314,"identity":"36f76855-33c4-44ac-863e-013fdfe3b245","order_by":0,"name":"Shouchuan Li","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Shouchuan","middleName":"","lastName":"Li","suffix":""},{"id":265588315,"identity":"dc9f44c9-e11f-4fdf-a352-c342dc08de52","order_by":1,"name":"Chengxiang He","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Chengxiang","middleName":"","lastName":"He","suffix":""},{"id":265588316,"identity":"95520f44-ae15-4742-9ecc-384388e46167","order_by":2,"name":"Zhongdong Wang","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Zhongdong","middleName":"","lastName":"Wang","suffix":""},{"id":265588317,"identity":"a37c83e3-f3c6-4560-9bce-ff6c473aae87","order_by":3,"name":"Chunying Zhu","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Chunying","middleName":"","lastName":"Zhu","suffix":""},{"id":265588318,"identity":"208219f2-f7d6-4b3b-b730-e58249f84e2e","order_by":4,"name":"Youguang Ma","email":"","orcid":"","institution":"Tianjin University","correspondingAuthor":false,"prefix":"","firstName":"Youguang","middleName":"","lastName":"Ma","suffix":""},{"id":265588319,"identity":"e32c3e8c-477c-4d1f-8efc-689042ab9ecd","order_by":5,"name":"Taotao Fu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAApklEQVRIiWNgGAWjYFACxgcMHxjYQCwD4jTwsDEbMM5IIFULM08CAwla7OWb2aRtf/AlNrA3b5NgqLlDlC1s0jkJbIkNPMfKJBiOPSNGC/8xiBaJHDMJxobDRNpiAdIi/4YULQxgW3iI1XIsmdmyJ43NuI0nrdgi4RgRWtibDzPe+GFzTLaf/fDGGx9qiNACBccg8Z9AtAYGhhoS1I6CUTAKRsGIAwB7FCyZql6nRAAAAABJRU5ErkJggg==","orcid":"","institution":"Tianjin University","correspondingAuthor":true,"prefix":"","firstName":"Taotao","middleName":"","lastName":"Fu","suffix":""}],"badges":[],"createdAt":"2024-01-06 14:14:41","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3839957/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3839957/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":49454538,"identity":"d7cc96a6-159f-43dd-ac24-b0da614ec8fe","added_by":"auto","created_at":"2024-01-11 06:07:36","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1013558,"visible":true,"origin":"","legend":"","description":"","filename":"Arrangementandfeedbackeffectsofdropletswarmsinaparallelmicrochanneldevice.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3839957/v1_covered_bd80d1c3-bf44-4922-9b24-56a19eec25da.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Arrangement and feedback effects of droplet swarms in a parallel microchannel device","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":"","lastPublishedDoi":"10.21203/rs.3.rs-3839957/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3839957/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eDroplet swarms are the dominant form of highly dispersed microdroplets in cavities. In the self-assembly of droplet swarms, the continuous phase tends to flow in the path of the minimum resistance, the arrangement of the droplet swarms tends to minimize the potential energy, and the two mechanisms compromise in competition. In this paper, whether droplet swarms can timely adjust the morphology is measured by the ratio of the average flow rate of the two-phase flow to that of the droplet swarms, so as to clarify the dominant mechanism of the arrangement of droplet swarms. The arrangement of droplet swarms dominated by different mechanisms and the distribution of that are introduced, and the prediction method for the arrangement of droplet swarms is proposed. The mechanism of the breakup of the microdroplet in the cavity is elucidated, and three modes of the breakup in the cavity are introduced. 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