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Showing 1 to 5 of 5 for “"Saffman-Taylor instability"”.
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Radial Miscible Viscous Fingering of Icelandic Mantle Plume
… radial miscible fi ngers develop due to the Saffman-Taylor instability, a fluid dynamical phenomenon which occurs when a less viscous fluid is injected into a more viscous fluid. Mobility ratio (i.e. the ratio of fluid viscosities), Peclet number (i.e. the ratio of advective and diffusive …
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Metal-foam interface stability during the filling of lost foam moulds with aluminium alloys
… the defect was caused by polymer entrapment. A Saffman-Taylor instability was observed at the interface between Hg and a viscous glucose syrup which were contained in an analogue, that was used simulate the casting of Lost Foam moulds at room temperature. The liquid degradation products of the …
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Viscous fingering instabilities and gravity currents.–—
This thesis examines the possible instability of radially spreading interfaces to the formation of fingers that break the axial symmetry. A well-known example of this occurs when a less viscous fluid displaces a more viscous immiscible fluid either in a porous medium or in a Hele-Shaw cell, which …
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Vertical Motions at the Fringes of the Icelandic Plume
… of radial viscous fingering due to a Saffman-Taylor instability. This fluid dynamical phenomenon occurs when less viscous fluid is injected into a layer of more viscous fluid. By comparing the thermal and convective characteristics of the plume with experimental and theoretical …
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Moving contact lines, wetting transitions and interfacial instabilities in confined environments
… and non-trivial consequences on the dynamics and instability of immiscible fluid fronts. We first present a theoretical model for thin-film flows on solid surfaces in the partial wetting regime and show that a self-consistent description of free energy of this system at equilibrium leads to a …