ŠLAPANSKÁ, Marta, Martin KUBEČKA, Adam OBRUSNÍK, Jaroslav HNILICA and Zdeněk BONAVENTURA. Study of cavitation in liquid water under the action of inhomogeneous pulsed electric fields: application to sub-nanosecond electrical breakdown. In The 45th European Physical Society Conference on Plasma Physics. 2018.
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Basic information
Original name Study of cavitation in liquid water under the action of inhomogeneous pulsed electric fields: application to sub-nanosecond electrical breakdown
Authors ŠLAPANSKÁ, Marta, Martin KUBEČKA, Adam OBRUSNÍK, Jaroslav HNILICA and Zdeněk BONAVENTURA.
Edition The 45th European Physical Society Conference on Plasma Physics, 2018.
Other information
Original language English
Type of outcome Conference abstract
Field of Study 10305 Fluids and plasma physics
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Science
Keywords in English cavitation; liquid water; inhomogeneous pulsed electric fields; sub-nanosecond electrical breakdown
Tags International impact
Changed by Changed by: Mgr. Marta Šlapanská, Ph.D., učo 408884. Changed: 16/8/2018 13:24.
Abstract
Sub-nanosecond electrical breakdown in dielectric liquids is of vital interest. Liquid dielectrics in strong nonuniform electric fields are under influence of electrostrictive force that tents to move the fluid into the regions with higher electric field. If the voltage rise is fast enough, the liquid does not have enough time to set into motion thanks to inertia. Then the poderomotive force induces significant stress in the bulk of the liquid leading to generation of a negative pressure. At certain threshold, the negative pressure causes cavitation ruptures of the fluid. Free electrons then can be produced by emission from the surface inside the cavity and accelerated to energies exceeding the energy for ionization of water and contribute thus to formation of microstreamers.
Links
GA18-04676S, research and development projectName: Základní mechanismy nanosekundového výboje v kapalné vodě
Investor: Czech Science Foundation
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