Quantifying the Influence of Parametric Variation on Internal Flow Characteristics in Hybrid Scramjet Combustor

Quantifying the Influence of Parametric Variation on Internal Flow Characteristics in Hybrid Scramjet Combustor | 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 Quantifying the Influence of Parametric Variation on Internal Flow Characteristics in Hybrid Scramjet Combustor Namrata Bordoloi, Krishna M Pandey, Vaishali Gupta, C Chanakyan This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6582814/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 Scramjet technology enables lightweight space missions, with successful tests conducted worldwide. Researchers are continuously refining combustor designs by incorporating turbulence inserts, flame holders, and struts in parallel-cavity combustors to enhance performance. One such refinement in scramjet combustor design is the addition of a strut to the parallel-cavity configuration. This study utilizes computational fluid dynamics to analyze behaviour internal flow field variables and to estimate the performance of the combustor. The research work presents a parametric variation of the inlet variables for the current combustor. The inlet variable such as the inlet Mach number, temperature and pressure are estimated with the motive to identify the optimum boundary variable on which the scramjet model operates optimum. A validation study has been conducted, the simulation results and the experimental results are in good accord. The computational observations indicate the scramjet model achieves optimal performance at M air =2.52, Inlet temperature = 340K, and fuel pressure = 1 bar. Combustion Fuel injection k-ω parameter Turbulence 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-6582814","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":453458369,"identity":"f480334f-5b82-4a72-a7ad-e928244f2d41","order_by":0,"name":"Namrata Bordoloi","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA4UlEQVRIiWNgGAWjYBCDBAYG5mNgFhs7kRqAWtjSwDrZmInXwmMG1sJASIs5++m0Dz9/2OXxS5/59uDjj23yfMwMjB8+5uDWYtmTu3lmT0JysWRf7nbDGQm3DduYGZglZ27DrcXgQO5mBp4E5sQNZ3i3SfMk3GYEamFj5sWn5fzbzYx/EuqBWniegbTYE9ZyI3czM0/CYZAWNpCWRCK0vN3MLJN2vFiyh81Mckba7eQ2ZsZm/H45n7uZ8Y1NdR4/D/MziQ82t23ntzcf/PARjxZsgLGBNPWjYBSMglEwCjAAAOzzTOeitnvSAAAAAElFTkSuQmCC","orcid":"","institution":"MVJ College of Engineering","correspondingAuthor":true,"prefix":"","firstName":"Namrata","middleName":"","lastName":"Bordoloi","suffix":""},{"id":453458370,"identity":"7347024b-87eb-4c94-b761-964069a20b57","order_by":1,"name":"Krishna M Pandey","email":"","orcid":"","institution":"National Institute Of Technology Silchar","correspondingAuthor":false,"prefix":"","firstName":"Krishna","middleName":"M","lastName":"Pandey","suffix":""},{"id":453458371,"identity":"39d84d3e-921c-47d1-8d02-18421e013b9a","order_by":2,"name":"Vaishali Gupta","email":"","orcid":"","institution":"Government Engineering College, Samastipur","correspondingAuthor":false,"prefix":"","firstName":"Vaishali","middleName":"","lastName":"Gupta","suffix":""},{"id":453458372,"identity":"69380123-4302-4674-8459-8877a56f6ea8","order_by":3,"name":"C Chanakyan","email":"","orcid":"","institution":"MVJ College of Engineering","correspondingAuthor":false,"prefix":"","firstName":"C","middleName":"","lastName":"Chanakyan","suffix":""}],"badges":[],"createdAt":"2025-05-03 08:08:14","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6582814/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6582814/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":84615291,"identity":"9caa4e17-d970-4331-8324-7d485d279d45","added_by":"auto","created_at":"2025-06-14 17:31:32","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2088777,"visible":true,"origin":"","legend":"","description":"","filename":"QUANTIFYINGTHEINFLUENCEOFPARAMETRICVARIATIONONINTERNALFLOWCHARACTERISTICSINHYBRIDSCRAMJETCOMBUSTORcorrected.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6582814/v1_covered_cec8d82a-958c-4ff6-8363-71d4724944d9.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"\u003cp\u003eQuantifying the Influence of Parametric Variation on Internal Flow Characteristics in Hybrid Scramjet Combustor\u003c/p\u003e","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":"Combustion, Fuel injection, k-ω, parameter, Turbulence","lastPublishedDoi":"10.21203/rs.3.rs-6582814/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6582814/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eScramjet technology enables lightweight space missions, with successful tests conducted worldwide. Researchers are continuously refining combustor designs by incorporating turbulence inserts, flame holders, and struts in parallel-cavity combustors to enhance performance. One such refinement in scramjet combustor design is the addition of a strut to the parallel-cavity configuration. This study utilizes computational fluid dynamics to analyze behaviour internal flow field variables and to estimate the performance of the combustor. The research work presents a parametric variation of the inlet variables for the current combustor. The inlet variable such as the inlet Mach number, temperature and pressure are estimated with the motive to identify the optimum boundary variable on which the scramjet model operates optimum. A validation study has been conducted, the simulation results and the experimental results are in good accord. 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