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Convected level set method for the numerical simulation of fluid buckling

Abstract : 'Fluid buckling' is a phenomenon characterized mainly by the existence of fluid toroidal oscillations during flow. It appears when a high viscosity fluid flows vertically against a flat surface and may occur in industrial applications, as in injection molding of a propergol in complex-shaped cavities. These coiling or folding oscillations appear during the mold filling stage, leading to air entrapment. To understand and to model this free surface flow problem, a convected level set method is proposed. First, a sinus filter is applied to the distance function to get a smooth truncation far from the interface. Second, the reinitialization is embedded in the transport equation model, avoiding it as a separate step during calculation. In order to validate the method, numerical results are presented on classical interface capturing benchmarks. Finally, results are shown on two-dimensional and three-dimensional viscous jet buckling problems.
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Submitted on : Tuesday, May 24, 2011 - 3:01:19 PM
Last modification on : Wednesday, November 17, 2021 - 12:28:18 PM

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Laurence Ville, Luisa Silva, Thierry Coupez. Convected level set method for the numerical simulation of fluid buckling. International Journal for Numerical Methods in Fluids, Wiley, 2011, 66 (3), pp.324-344. ⟨10.1002/fld.2259⟩. ⟨hal-00595325⟩



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