Effect of Blade Parameters on Radial Turbine Rotor Aerodynamics

Effect of Blade Parameters on Radial Turbine Rotor Aerodynamics | 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 Article Effect of Blade Parameters on Radial Turbine Rotor Aerodynamics Mostafa Abdo Fawaz, Ahmed Farid Ayad Hassan, Mohammed Shaheen, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7694890/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 14 Jan, 2026 Read the published version in Scientific Reports → Version 1 posted 13 You are reading this latest preprint version Abstract Radial turbines are widely used in turbochargers, small-scale power systems, and propulsion applications, where efficiency and compactness are critical. Improving rotor design is therefore essential to enhance overall turbine performance. This study investigates how blade angle distribution, thickness profile, and blade count influence the aerodynamic behavior of radial turbine rotors. A baseline rotor was taken as reference, and modified cases were generated by systematically varying each parameter. Performance was evaluated in terms of turbine efficiency and reduced mass flow rate. The results indicate that variations in blade geometry strongly affect turbine operation. For each parameter, the most efficient configuration was benchmarked against the reference rotor, and detailed flow analyses were conducted to identify the aerodynamic mechanisms responsible for the improvements. The findings highlight the importance of blade geometry in boosting radial turbine efficiency and offer practical guidelines for rotor optimization. Physical sciences/Energy science and technology Physical sciences/Engineering Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 14 Jan, 2026 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 10 Nov, 2025 Reviews received at journal 07 Nov, 2025 Reviews received at journal 03 Oct, 2025 Reviews received at journal 03 Oct, 2025 Reviewers agreed at journal 02 Oct, 2025 Reviewers agreed at journal 30 Sep, 2025 Reviewers agreed at journal 30 Sep, 2025 Reviewers agreed at journal 30 Sep, 2025 Reviewers invited by journal 30 Sep, 2025 Editor assigned by journal 30 Sep, 2025 Editor invited by journal 29 Sep, 2025 Submission checks completed at journal 27 Sep, 2025 First submitted to journal 27 Sep, 2025 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-7694890","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":527540840,"identity":"6cd79604-7978-4b3f-a050-167f42778238","order_by":0,"name":"Mostafa Abdo 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Improving rotor design is therefore essential to enhance overall turbine performance. This study investigates how blade angle distribution, thickness profile, and blade count influence the aerodynamic behavior of radial turbine rotors. A baseline rotor was taken as reference, and modified cases were generated by systematically varying each parameter. Performance was evaluated in terms of turbine efficiency and reduced mass flow rate. The results indicate that variations in blade geometry strongly affect turbine operation. For each parameter, the most efficient configuration was benchmarked against the reference rotor, and detailed flow analyses were conducted to identify the aerodynamic mechanisms responsible for the improvements. The findings highlight the importance of blade geometry in boosting radial turbine efficiency and offer practical guidelines for rotor optimization.\u003c/p\u003e","manuscriptTitle":"Effect of Blade Parameters on Radial Turbine Rotor Aerodynamics","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-10-13 03:02:47","doi":"10.21203/rs.3.rs-7694890/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2025-11-10T05:45:53+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-11-07T17:18:36+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-10-04T01:58:41+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-10-04T01:22:09+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"246839929009685064939567542020524661691","date":"2025-10-02T08:36:09+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"54842693699871110629047196213495457768","date":"2025-09-30T14:54:57+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"300457220261234739582398090576410153983","date":"2025-09-30T13:30:23+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"10978195858866421721987580228872371408","date":"2025-09-30T08:40:51+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-09-30T08:33:23+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-09-30T08:20:11+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2025-09-30T02:16:49+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-09-27T09:00:09+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2025-09-27T08:57:00+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"cb9feaf6-5dbb-43f4-bb9e-f9e1fc749bf7","owner":[],"postedDate":"October 13th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":56072205,"name":"Physical sciences/Energy science and technology"},{"id":56072206,"name":"Physical sciences/Engineering"}],"tags":[],"updatedAt":"2026-01-19T16:46:28+00:00","versionOfRecord":{"articleIdentity":"rs-7694890","link":"https://doi.org/10.1038/s41598-025-33442-4","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2026-01-14 16:29:07","publishedOnDateReadable":"January 14th, 2026"},"versionCreatedAt":"2025-10-13 03:02:47","video":"","vorDoi":"10.1038/s41598-025-33442-4","vorDoiUrl":"https://doi.org/10.1038/s41598-025-33442-4","workflowStages":[]},"version":"v1","identity":"rs-7694890","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7694890","identity":"rs-7694890","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}