Effects of external magnetic field on flow separation, control and reattachment

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This study uses OpenFOAM to analyze how transverse magnetic fields affect flow separation and reattachment over backward-facing inclined steps for various angles and Hartmann numbers.

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This paper uses OpenFOAM CFD to study how a transverse external magnetic field affects two-dimensional, incompressible, laminar magnetohydrodynamic flow over a backward-facing inclined step. Simulations vary the backward step angle (10°–90°) and Hartmann number (0–30) at fixed kinematic Reynolds number Re = 100 and magnetic Reynolds number Rem = 0.04, and evaluate changes in reattachment length using streamlines, streamwise pressure gradient, and velocity profiles. A key finding is that both step geometry and magnetic field strength influence the reattachment behavior of the recirculation/separation region. The main limitation is that the study is restricted to 2D laminar, incompressible electrically conducting flow at specific fixed Reynolds numbers. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract

Abstract The paper attempts to analyze the effect of transverse magnetic field on flow over a backward-facing inclined step using the open-source CFD solver OpenFOAM. The equations governing the twodimensional, incompressible, laminar, electrically conducting flow are discretized and solved using the PISO algorithm. The simulations are conducted for various backward step angles (10◦ ≤ α ≤90◦) and Hartmann Numbers (0≤ M ≤30) at fixed kinematic (Re) and magnetic (Rem) Reynolds Numbers of 100 and 0.04 respectively. The influence of step angle and Hartmann number on the reattachment length is explored with the help of streamlines, streamwise pressure gradient, and velocity profiles.
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Effects of external magnetic field on flow separation, control and reattachment | 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 Effects of external magnetic field on flow separation, control and reattachment Vinayak Vinod Shenoy, AJITH KUMAR S This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3765888/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 29 May, 2024 Read the published version in Journal of the Brazilian Society of Mechanical Sciences and Engineering → Version 1 posted 4 You are reading this latest preprint version Abstract The paper attempts to analyze the effect of transverse magnetic field on flow over a backward-facing inclined step using the open-source CFD solver OpenFOAM. The equations governing the twodimensional, incompressible, laminar, electrically conducting flow are discretized and solved using the PISO algorithm. The simulations are conducted for various backward step angles (10◦ ≤ α ≤90◦) and Hartmann Numbers (0≤ M ≤30) at fixed kinematic (Re) and magnetic (Rem) Reynolds Numbers of 100 and 0.04 respectively. The influence of step angle and Hartmann number on the reattachment length is explored with the help of streamlines, streamwise pressure gradient, and velocity profiles. Computational Fluid Dynamics magneto-hydrodynamics backward facing step OpenFOAM re-circulation bubble flow separation boundary layer reattachment etc. Full Text Cite Share Download PDF Status: Published Journal Publication published 29 May, 2024 Read the published version in Journal of the Brazilian Society of Mechanical Sciences and Engineering → Version 1 posted Reviewers agreed at journal 15 Jan, 2024 Reviewers invited by journal 13 Jan, 2024 Editor assigned by journal 19 Dec, 2023 First submitted to journal 16 Dec, 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. 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. 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