Light scattering and transient current measurements on unsteady EHD jet flows

Disselnkötter, R.; Bärner, K.

doi:10.1016/0304-3886(89)90109-5

Cited by 9 publications

(2 citation statements)

References 17 publications

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“…Figure 4 shows a typical Schlieren image of the liquid single-phase EHD flow pattern for the needle electrode immersed in the liquid when the dc high voltage V dc of +15 kV is applied to the needle electrode. This anti-clockwise rotation of dielectric liquid flow has been agreeing with the Schlieren pattern observations by the other researchers [13][14][15]. On the other hand, when the ac high voltage was applied to the same electrode system, i.e.…”

Section: Schlieren Imagessupporting

confidence: 91%

“…On the other hand, the EHD flow in a liquid-phase initiates by the Coulomb force resulting from the interaction of dc electric field with free space charges, which are nonuniformly distributed in the liquid [12]. The liquid-phase EHD flow is often observed from the corona discharge electrode as similar to the gas-phase flow [13][14][15]. However, the liquidphase EHD flow phenomenon initiated by the charge injection under ac electric field has not yet been well experimentally investigated.…”

Section: Introductionmentioning

confidence: 99%

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Schlieren optical visualization for transient EHD induced flow in a stratified dielectric liquid under gas-phase ac corona discharges

Ohyama¹,

Inoue²,

Chang³

2007

J. Phys. D: Appl. Phys.

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A flow pattern characterization of electrohydrodynamically (EHD) induced flow phenomena of a stratified dielectric fluid situated in an ac corona discharge field is conducted by a Schlieren optical system. A high voltage application to a needle-plate electrode arrangement in gas-phase normally initiates a conductive type EHD gas flow. Although the EHD gas flow motion initiated from the corona discharge electrode has been well known as corona wind, no comprehensive study has been conducted for an EHD fluid flow motion of the stratified dielectric liquid that is exposed to the gas-phase ac corona discharge. The experimentally observed result clearly presents the liquid-phase EHD flow phenomenon induced from the gas-phase EHD flow via an interfacial momentum transfer. The flow phenomenon is also discussed in terms of the gas-phase EHD number under the reduced gas pressure (reduced interfacial momentum transfer) conditions.

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Section: Schlieren Imagessupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%