A spectral vanishing viscosity method for large-eddy simulations of two-fluid flow

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buir.advisorBiancofiore, Luca
dc.contributor.authorKhoshavaz, Solmaz
dc.date.accessioned2021-01-07T10:29:39Z
dc.date.available2021-01-07T10:29:39Z
dc.date.copyright2020-12
dc.date.issued2020-12
dc.date.submitted2021-01-06
dc.descriptionCataloged from PDF version of article.en_US
dc.descriptionThesis (M.S.): Bilkent University, Department of Mechanical Engineering, İhsan Doğramacı Bilkent University, 2020.en_US
dc.descriptionIncludes bibliographical references (leaves 77-79).en_US
dc.description.abstractDNS studies of turbulent flows have proved to be inefficient in terms of time and computational resources. On the other hand, Large-eddy simulation (LES) is an effective approach towards modeling turbulence. The current research applies an extension of the Spectral Vanishing Viscosity (SVV) method to finite differences. This straight-forward LES technique allows turbulence modeling without the need for filtering or upwinding. The result is a hybrid DNS/LES Solver. The solver is applied to the two-fluid problem of falling liquid film in the presence of turbulent gas. Numerical simulation of falling liquid films requires a mathematical representation of the multiphase flow. A Direct Numerical Simulation (DNS) solver implementing finite volumes is used to solve the Navier-Stokes equations for the liquid phase. The Front Tracking method is used to model the moving gas-liquid interface. Gravity-driven falling liquid films are commonplace in engineering applications. Perturbed falling films dramatically increase the heat/mass transport across the interface compared to flat films, which highlights the significance of studying interfacial flows. The present research aims to develop a numerical tool, which will be used to further investigate falling liquid film phenomena.en_US
dc.description.provenanceSubmitted by Betül Özen (ozen@bilkent.edu.tr) on 2021-01-07T10:29:39Z No. of bitstreams: 1 A Spectral Vanishing Viscosity Method for Large-Eddy Simulat.pdf: 3698390 bytes, checksum: fa2e5efcd2c0c985fc6300654dab8f0f (MD5)en
dc.description.provenanceMade available in DSpace on 2021-01-07T10:29:39Z (GMT). No. of bitstreams: 1 A Spectral Vanishing Viscosity Method for Large-Eddy Simulat.pdf: 3698390 bytes, checksum: fa2e5efcd2c0c985fc6300654dab8f0f (MD5) Previous issue date: 2021-01en
dc.description.statementofresponsibilityby Solmaz Khoshavazen_US
dc.embargo.release2021-06-06
dc.format.extentxii, 83 leaves : illustrations , 30 cm.en_US
dc.identifier.itemidB130911
dc.identifier.urihttp://hdl.handle.net/11693/54869
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectTurbulenceen_US
dc.subjectLarge-eddy simulationen_US
dc.subjectSpectral vanishing viscosityen_US
dc.subjectTwofluid flowen_US
dc.subjectFalling liquid filmsen_US
dc.titleA spectral vanishing viscosity method for large-eddy simulations of two-fluid flowen_US
dc.title.alternativeİki sıvılı akışlarda geniş girdaplı simülasyonlar için spektral kaybolan viskosite yöntemien_US
dc.typeThesisen_US
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorBilkent University
thesis.degree.levelMaster's
thesis.degree.nameMS (Master of Science)

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