The Hydrodynamic Cavitation Manifestation in Small Chips 

The Hydrodynamic Cavitation Manifestation in Small Chips | 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Research Article The Hydrodynamic Cavitation Manifestation in Small Chips Morteza Ghorbani This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-489442/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 05 Aug, 2021 Read the published version in IEEE Access → Version 1 posted You are reading this latest preprint version Abstract Cavitation is a phase change phenomenon created by the static pressure reduction of a liquid medium at a constant temperature. This process has been considered as a disadvantageous mechanism in most turbomachinery systems, however, its potential in releasing energy at the bubble collapse stage has received lots of attention in recent decades. Particularly, the applicability of this phenomenon in micro scale gives rise to the research studies in different fields, i.e., wastewater treatment and medical imaging. In this study, microfluidic devices housing small microchannels have been fabricated to study the generation of the cavitating flow patterns bubbles. The main focuses in this work are on the surface and side wall roughness together with the size reduction effects on cavitation bubble generation. Accordingly, the microfluidic devices were fabricated using the techniques adopted from semi conductor based micro-fabrication. The experiments were performed at relatively higher upstream pressure, 4 to 7 MPa, to investigate the durability of the devices and flow patterns features. The results show that the side wall roughness elements are very effective in the small microchannels in terms of facile cavitating flow generation, while the size reduction in the diameter of the channel does not accompany intensified cavitating flow necessarily. Chemical Engineering Mechanical Engineering Cavitation Small microchannel Pressure Surface roughness Side wall roughness Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Full Text Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF. Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 05 Aug, 2021 Read the published version in IEEE Access → 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-489442","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":25091245,"identity":"6a22843e-ab27-40ad-a4bc-cd4b1bb9fa85","order_by":0,"name":"Morteza 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7","display":"","copyAsset":false,"role":"figure","size":121288,"visible":true,"origin":"","legend":"The twin cavities in the extension part of the four side wall roughened microfluidic devices at upstream pressures (Pin) of 4 and 7 MPa","description":"","filename":"7.jpg","url":"https://assets-eu.researchsquare.com/files/rs-489442/v1/b09b4a997c620512a1ae6031.jpg"},{"id":8866982,"identity":"cf128523-d454-48f8-9147-d919f84bbb19","added_by":"auto","created_at":"2021-05-06 16:07:28","extension":"jpg","order_by":8,"title":"Figure 8","display":"","copyAsset":false,"role":"figure","size":44845,"visible":true,"origin":"","legend":"The variation of the P2, the pressure at the location of the vena contracta with respect to the pressure drop for four side wall roughened microfluidic 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