Numerical and Experimental Investigation on the Cluster Characteristics of Molybdenum Disulfide Lubricant Particles

Numerical and Experimental Investigation on the Cluster Characteristics of Molybdenum Disulfide Lubricant Particles | 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 Numerical and Experimental Investigation on the Cluster Characteristics of Molybdenum Disulfide Lubricant Particles Lijie Ma, Fei Gao, Fengnan Li, Leyang Li, Zixiang Zhang, Junhao Li, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9290693/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 To suppress the dispersion phenomenon during the pneumatic injection of granular lubricants and achieve clustered transport of the particle stream, this study employed an integrated approach combining Fluent numerical simulation with experimental investigation. The motion characteristics of MoS 2 particles with two sizes (1 µm and 50 nm) under varying air pressures were thoroughly examined, with a systematic analysis of the effects of conveying pressure and particle size on the particle clustering behavior. The results demonstrate that higher conveying pressure significantly improves particle clustering. At the designated jet length, the distribution cross-sectional areas for micron-sized and nanometer-sized particles under high pressure were measured as 35.55 mm² and 51.22 mm², respectively. These values represent reductions of 26.57% and 24.90% compared to the low-pressure condition. Moreover, the particle coverage area became more concentrated under high pressure, with average coverage areas of 1.90 mm² and 5.43 mm² for micron-sized and nanometer-sized particles, corresponding to decreases of 65.07% and 22.76%. Additionally, micron-sized particles exhibit superior clustering performance​ compared to nanoscale particles. The results show that under high-pressure conditions, the distribution cross-sectional area and coverage area of micron-sized particles are reduced by 31.00% and 86.14%, respectively, relative to those of nanoscale particles. This study enhances the utilization efficiency of granular lubricants and enables their precise quantitative control. These improvements are expected to increase the effectiveness of granular flow lubrication, thereby facilitating its broader application. Pneumatic injection Granular lubricants༛Particle clustering༛Numerical simulation 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. 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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-9290693","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":629962790,"identity":"cd1ab26d-4bae-4b08-837c-73fa81f916ad","order_by":0,"name":"Lijie 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simulation","lastPublishedDoi":"10.21203/rs.3.rs-9290693/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9290693/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eTo suppress the dispersion phenomenon during the pneumatic injection of granular lubricants and achieve clustered transport of the particle stream, this study employed an integrated approach combining Fluent numerical simulation with experimental investigation. The motion characteristics of MoS\u003csub\u003e2\u003c/sub\u003e particles with two sizes (1 \u0026micro;m and 50 nm) under varying air pressures were thoroughly examined, with a systematic analysis of the effects of conveying pressure and particle size on the particle clustering behavior. The results demonstrate that higher conveying pressure significantly improves particle clustering. At the designated jet length, the distribution cross-sectional areas for micron-sized and nanometer-sized particles under high pressure were measured as 35.55 mm\u0026sup2; and 51.22 mm\u0026sup2;, respectively. These values represent reductions of 26.57% and 24.90% compared to the low-pressure condition. Moreover, the particle coverage area became more concentrated under high pressure, with average coverage areas of 1.90 mm\u0026sup2; and 5.43 mm\u0026sup2; for micron-sized and nanometer-sized particles, corresponding to decreases of 65.07% and 22.76%. Additionally, micron-sized particles exhibit superior clustering performance​ compared to nanoscale particles. The results show that under high-pressure conditions, the distribution cross-sectional area and coverage area of micron-sized particles are reduced by 31.00% and 86.14%, respectively, relative to those of nanoscale particles. This study enhances the utilization efficiency of granular lubricants and enables their precise quantitative control. These improvements are expected to increase the effectiveness of granular flow lubrication, thereby facilitating its broader application.\u003c/p\u003e","manuscriptTitle":"Numerical and Experimental Investigation on the Cluster Characteristics of Molybdenum Disulfide Lubricant Particles","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-30 09:42:30","doi":"10.21203/rs.3.rs-9290693/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","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}}],"origin":"","ownerIdentity":"e92ea765-dd96-4fc5-909a-05faba093623","owner":[],"postedDate":"April 30th, 2026","published":true,"recentEditorialEvents":[{"type":"editorInvitedReview","content":"","date":"2026-05-03T02:18:45+00:00","index":13,"fulltext":""}],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2026-04-30T09:42:30+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-30 09:42:30","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9290693","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9290693","identity":"rs-9290693","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}