Study of cavitation in liquid water under the action of
inhomogeneous pulsed electric fields: application to
sub-nanosecond electrical breakdown

a 2018

Study of cavitation in liquid water under the action of inhomogeneous pulsed electric fields: application to sub-nanosecond electrical breakdown

ŠLAPANSKÁ, Marta; Martin KUBEČKA; Adam OBRUSNÍK; Jaroslav HNILICA; Zdeněk BONAVENTURA et al.

Základní údaje

Originální název

Study of cavitation in liquid water under the action of inhomogeneous pulsed electric fields: application to sub-nanosecond electrical breakdown

Autoři

ŠLAPANSKÁ, Marta; Martin KUBEČKA; Adam OBRUSNÍK; Jaroslav HNILICA a Zdeněk BONAVENTURA

Vydání

The 45th European Physical Society Conference on Plasma Physics, 2018

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10305 Fluids and plasma physics

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

cavitation; liquid water; inhomogeneous pulsed electric fields; sub-nanosecond electrical breakdown

Příznaky

Mezinárodní význam

Změněno: 16. 8. 2018 13:24, Mgr. Marta Šlapanská, Ph.D.

Anotace

V originále

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.

Návaznosti

GA18-04676S, projekt VaV

Název: Základní mechanismy nanosekundového výboje v kapalné vodě

Investor: Grantová agentura ČR, Základní mechanismy nanosekundového výboje v kapalné vodě

Citovat

ŠLAPANSKÁ, Marta; Martin KUBEČKA; Adam OBRUSNÍK; Jaroslav HNILICA a 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.

@proceedings{1428096,
   author = {Šlapanská, Marta and Kubečka, Martin and Obrusník, Adam and Hnilica, Jaroslav and Bonaventura, Zdeněk},
   booktitle = {The 45th European Physical Society Conference on Plasma Physics},
   keywords = {cavitation; liquid water; inhomogeneous pulsed electric fields; sub-nanosecond electrical breakdown},
   language = {eng},
   title = {Study of cavitation in liquid water under the action of inhomogeneous pulsed electric fields: application to sub-nanosecond electrical breakdown},
   year = {2018}
}

TY  - CONF
ID  - 1428096
AU  - Šlapanská, Marta - Kubečka, Martin - Obrusník, Adam - Hnilica, Jaroslav - Bonaventura, Zdeněk
PY  - 2018
TI  - Study of cavitation in liquid water under the action of inhomogeneous pulsed electric fields: application to sub-nanosecond electrical breakdown
KW  - cavitation
KW  - liquid water
KW  - inhomogeneous pulsed electric fields
KW  - sub-nanosecond electrical breakdown
N2  - 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.
ER  -

ŠLAPANSKÁ, Marta; Martin KUBEČKA; Adam OBRUSNÍK; Jaroslav HNILICA a Zdeněk BONAVENTURA. Study of cavitation in liquid water under the action of inhomogeneous pulsed electric fields: application to sub-nanosecond electrical breakdown. In \textit{The 45th European Physical Society Conference on Plasma Physics}. 2018.

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