Variance-reduction kinetic simulation for characterization of surface and corner effects in low-speed rarefied gas flows through long micro-ducts

Variance-reduction kinetic simulation for characterization of surface and corner effects in low-speed rarefied gas flows through long micro-ducts | 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 Variance-reduction kinetic simulation for characterization of surface and corner effects in low-speed rarefied gas flows through long micro-ducts Ferdin Sagai Don Bosco, Kishore Kumar Kammara This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4788517/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 06 Oct, 2024 Read the published version in Microfluidics and Nanofluidics → Version 1 posted 9 You are reading this latest preprint version Abstract Microfluidic-MEMS (micro-electromechanical system) devices consist of complex subsystems in which the transfer of mass, momentum and energy is critical. This is often achieved by a pressure gradient-driven, low-speed rarefied gas transport in long micro-ducts. Gaseous rarefaction, and geometrical properties of micro-ducts, such as cross-section profile and surface roughness, play a decisive role in the segregation of the flow into inertia-driven and surface-dominated domains. In this work, a parallel stochastic kinetic particle solver that solves the low-variance Boltzmann Bhatnagar–Gross–Krook (BGK) formulation is utilized to study isothermal rarefied gas transport through polar and triangular cross-sections. The effect of geometrical features such as surface proximity to the inertial core and the role of corners, are characterized. A novel parameter to indicate surface influence is introduced, which can be gainfully used in MEMS design and optimization. Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 06 Oct, 2024 Read the published version in Microfluidics and Nanofluidics → Version 1 posted Editorial decision: Revision requested 19 Aug, 2024 Reviews received at journal 16 Aug, 2024 Reviews received at journal 06 Aug, 2024 Reviewers agreed at journal 26 Jul, 2024 Reviewers agreed at journal 24 Jul, 2024 Reviewers invited by journal 24 Jul, 2024 Editor assigned by journal 24 Jul, 2024 Submission checks completed at journal 23 Jul, 2024 First submitted to journal 23 Jul, 2024 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-4788517","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":341267660,"identity":"0edecdf8-0d32-4806-bdc3-3ea79533a515","order_by":0,"name":"Ferdin Sagai Don Bosco","email":"","orcid":"","institution":"Boson Q Psi Corporation","correspondingAuthor":false,"prefix":"","firstName":"Ferdin","middleName":"Sagai Don","lastName":"Bosco","suffix":""},{"id":341267661,"identity":"31d120e3-3354-4397-b735-15c7eec3e337","order_by":1,"name":"Kishore Kumar Kammara","email":"data:image/png;base64,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","orcid":"","institution":"BMS College of Engineering","correspondingAuthor":true,"prefix":"","firstName":"Kishore","middleName":"Kumar","lastName":"Kammara","suffix":""}],"badges":[],"createdAt":"2024-07-23 11:51:10","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4788517/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4788517/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s10404-024-02769-1","type":"published","date":"2024-10-06T15:57:30+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":66097762,"identity":"61eabee1-18ca-4681-b6b9-0a183a1deb57","added_by":"auto","created_at":"2024-10-07 16:15:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":8608160,"visible":true,"origin":"","legend":"","description":"","filename":"Variancereductionkineticsimulation.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4788517/v1_covered_55de950a-db6d-47f6-b635-275aff4f153d.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Variance-reduction kinetic simulation for characterization of surface and corner effects in low-speed rarefied gas flows through long micro-ducts","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"microfluidics-and-nanofluidics","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"mano","sideBox":"Learn more about [Microfluidics and Nanofluidics](http://link.springer.com/journal/10404)","snPcode":"10404","submissionUrl":"https://submission.nature.com/new-submission/10404/3","title":"Microfluidics and Nanofluidics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-4788517/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4788517/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eMicrofluidic-MEMS (micro-electromechanical system) devices consist of complex subsystems in which the transfer of mass, momentum and energy is critical. 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