Influence of Pulsating Internal Fluid Flow on the Nonlinear Dynamics of Marine Risers

Influence of Pulsating Internal Fluid Flow on the Nonlinear Dynamics of Marine Risers | 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 Influence of Pulsating Internal Fluid Flow on the Nonlinear Dynamics of Marine Risers Feras Khaled Alfosail, Americo Cunha, Wen Zhao, Mohammad I. Younis This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3666876/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract In this work, we explore the dynamics of inclined marine risers subjected to pulsating internal fluid flow. The presence of geometric nonlinearities with static deflection makes the response of the inclined riser different from conventional top tension risers when subjected to pulsating flows. At first, the riser model is solved via the Galerkin method, and the results are compared and validated using perturbation analysis. Then, the response of the riser is studied under various parameters and pulsating flow frequencies. The excitation of the riser under pulsating flow fluctuations causes the riser to vibrate at primary and secondary parametric resonances simultaneously. In addition, the multifrequency parametric excitations interact with the inherit competing nonlinearities causing the response of the riser to exhibit a multi-state solution which is further analyzed via statistical analysis to examine the probability of the basin of attraction. The response of the riser reveals rich and complex nonlinear dynamics features such as quasiperiodic and chaotic behaviors. Full Text Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Major revisions 08 Apr, 2024 Reviewers agreed at journal 20 Dec, 2023 Reviewers invited by journal 17 Dec, 2023 Editor assigned by journal 26 Nov, 2023 First submitted to journal 25 Nov, 2023 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-3666876","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":260624724,"identity":"620179fa-879c-4aff-93bc-e7e07555414a","order_by":0,"name":"Feras Khaled Alfosail","email":"data:image/png;base64,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","orcid":"https://orcid.org/0000-0002-5553-4945","institution":"King Abdullah University of Science and Technology","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Feras","middleName":"Khaled","lastName":"Alfosail","suffix":""},{"id":260624725,"identity":"9b4f0287-0dbd-421a-b57f-a5af428991c7","order_by":1,"name":"Americo Cunha","email":"","orcid":"","institution":"Rio de Janeiro State University: Universidade do Estado do Rio de Janeiro","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Americo","middleName":"","lastName":"Cunha","suffix":""},{"id":260624726,"identity":"2ab02228-2951-4fab-be03-d3e099fd4bb0","order_by":2,"name":"Wen Zhao","email":"","orcid":"","institution":"King Abdullah University of Science and Technology","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Wen","middleName":"","lastName":"Zhao","suffix":""},{"id":260624727,"identity":"cd3edd8e-ed0b-4fd5-b096-0c47d14bf9c6","order_by":3,"name":"Mohammad I. 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