000013881 001__ 13881 000013881 005__ 20161115094004.0 000013881 04107 $$aeng 000013881 046__ $$k2016-08-21 000013881 100__ $$aDas, Soumik 000013881 24500 $$aElectrostatic suppression of the Leidenfrost state 000013881 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers 000013881 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016 000013881 506__ $$arestricted 000013881 520__ $$2eng$$aThe mechanisms of electrostatic suppression of the Leidenfrost state in an evaporating droplet with finite electrical conductivity is studied theoretically and experimentally. Using linear stability analyses for 2D and axisymmetric models of the electrohydrodynamic flow, the minimum voltage required for the suppression of the vapor gap (Leidenfrost effect) between the drop and hot surface is determined as a filnction of their voltage and temperature differences and the physical properties of the liquid and vapor. The dynamics of the liquid-vapor gap depends on the interplay of a destabilizing electrostatic force and stabilizing capillary and evaporation-driven hydrodynamic forces. The critical voltage required for Leidenfrost suppression is found to increase with both the droplet volume and the surface temperature. The critical wavelength of the applied perturbation is of the order of the droplet dimensions. There is very good agreement between theoretical predictions and experimental measurements. 000013881 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb. 000013881 653__ $$a 000013881 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016 000013881 720__ $$aDas, Soumik 000013881 8560_ $$ffischerc@itam.cas.cz 000013881 8564_ $$s154533$$uhttps://invenio.itam.cas.cz/record/13881/files/PO.FM06-1.10.94.pdf$$yOriginal version of the author's contribution as presented on CD, XMLout( page 850, code PO.FM06-1.10.94). 000013881 962__ $$r13812 000013881 980__ $$aPAPER