Heat Transport in a Vertical Rectangular Conduit with Viscous Dissipation: Silver/Magnesium Oxide-Water Hybrid Nanofluid

Heat Transport in a Vertical Rectangular Conduit with Viscous Dissipation: Silver/Magnesium Oxide-Water Hybrid Nanofluid | 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 Heat Transport in a Vertical Rectangular Conduit with Viscous Dissipation: Silver/Magnesium Oxide-Water Hybrid Nanofluid Jawali Umavathi, O. Anwar Beg This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8324363/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 Modern thermal duct systems are increasingly deploying nanofluids to achieve enhanced thermal efficiency in a range of technologies including nuclear power, process mechanical engineering and petro-chemical production. Motivated by these developments, the current study examines the buoyancy-driven convective transport of silver/magnesium oxide-water hybrid nanofluid (HNF) through a rigid vertical rectangular heated duct. The upper and lower boundaries of the duct are insulated, and the other walls are heated isothermally. Viscous heating effects are included. The transformed non-dimensional nonlinear boundary value problem derived is solved using in-house code. Verification of the accuracy of the FDM code is included via benchmarking with previous studies for special cases. A mesh independence test is also performed. For both cases of unitary nanofluid (NF) (deploying either magnesium oxide or silver nanoparticles) and HNF, temperature and velocity contour plots are provided for the impact of Grashof number, Brinkman number, nanoparticle solid volume fraction, and aspect ratio. The findings demonstrate that the velocity increases as the Grashof and Brinkman numbers increased, and that elevation in volume fraction exert a opposite result. For both unitary NF and HNF, the heat transfer rate falls at the right wall and rises at the left wall with a boost in values of Grashof number, Brinkman number, solid volume percentage, and aspect ratio. Heat transfer hybrid nanofluid viscous dissipation silver and magnesium oxide nanoparticles numerical method vertical rectangular duct Brinkman number aspect ratio 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. 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-8324363","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":583368713,"identity":"afdbb99f-c6cd-48de-8d36-9be70b2d5dbc","order_by":0,"name":"Jawali Umavathi","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA/UlEQVRIiWNgGAWjYDCCA1DagJkZyGST4GdvAAo+IEKLhAEzWwJIi2QPUORAAlFaGHgMgFoYwFoY8Gnhu33GdMPPNrs6c3aebx8+lFlI8Igdfgi0xU5OtwG7FslzOWY3e9uSJSybeTfPnHFOQoJHOs0AqCXZ2OwAdi0GZ3jMbvCcYZYwOMy7mZm3TaLOXjoBpOVA4jY8Wm7+OVMP1MLzmPlvG8iW9A8EtdzmqTgM0sLMzAjWkoPfFskzbGW3ZSqOS244zGbM2AP2S07BgQQD3H7hO8O87eYbg2p+g/OHHzP8KKsDOWzzhw8VdnK4tOACBqQpHwWjYBSMglGACgA2glzyL7XpZQAAAABJRU5ErkJggg==","orcid":"","institution":"SIMATS, Saveetha University","correspondingAuthor":true,"prefix":"","firstName":"Jawali","middleName":"","lastName":"Umavathi","suffix":""},{"id":583368714,"identity":"ab1e62bd-97a0-464c-9fc6-87340f2ae420","order_by":1,"name":"O. 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