000014535 001__ 14535
000014535 005__ 20161115100154.0
000014535 04107 $$aeng
000014535 046__ $$k2016-08-21
000014535 100__ $$aDas, Debasish
000014535 24500 $$aDynamics of leaky dielectric drops in strong electric fields: Boundary element simulations

000014535 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014535 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014535 506__ $$arestricted
000014535 520__ $$2eng$$aThe deformation of leaky dielectric drops in a dielectric fluid medium when subject to a uniform electric field is a classic electrohydrodynamic phenomena best described by the well known Melcher-Taylor leaky dielectric model [1, 2]. In this work we develop a three-dimensional boundary element method for the full leaky dielectric model to systematically study the deformation and dynamics of drops in electric fields. The inclusion of charge convection in our simulations permits us to investigate dynamics in the so-called Quincke regime of strong electric fields, in which experiments have demonstrated symmetry breaking bifurcations leading to spontaneous rotation [8]. Most previous simulations have neglected charge convection or assumed axisymmetric drop shapes which prevents investigation of Quincke rotation in drops. Our numerical simulations show excellent agreement with experiments [9]. We also extend Taylor’s small deformation theory [1] to include the transient shape deformation, charge relaxation and convection terms in the leaky dielectric model.

000014535 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014535 653__ $$a

000014535 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014535 720__ $$aDas, Debasish
000014535 8560_ $$ffischerc@itam.cas.cz
000014535 8564_ $$s104491$$uhttp://invenio.itam.cas.cz/record/14535/files/TS.FM06-3.01.pdf$$yOriginal version of the author's contribution as presented on CD,  page 798, code TS.FM06-3.01
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000014535 962__ $$r13812
000014535 980__ $$aPAPER