A symmetrically arranged electrodes for corona discharge anemometry

Van, Ngoc Tran; Thanh, Tung Bui; Dinh, Thien Xuan; Terebessy, Tibor; Duc, Trinh Chu; Dau, Van Thanh

doi:10.1109/transducers.2017.7994247

Cited by 1 publication

(1 citation statement)

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“…where is the mobility of positive and negative charges ( = 1.6 × 10 −4 2 • −1 • −1 ); Ri =10 both electrodes are connected to a single power source, which is battery operated, this current is considered to be equal at both positive and negative electrodes based on the simplified Kirchhoff's current law for charge conservation. In this work, the particle flow does not significantly affect the corona discharge because (i) there is no obstacle along the channel as presented in section 3 and (ii) the maximum velocity of particle flow is less than 1 m/s [48][49][50][51].…”

Section: Governing Equations and Boundary Conditionsmentioning

confidence: 99%

Particle precipitation by bipolar corona discharge ion winds

Dau

Dinh

Tran

et al. 2018

Journal of Aerosol Science

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The paper reports the development of a particle precipitation based aerosol sampler using bipolar corona discharge ion winds with collected particles of minimized net charge. For the new approach, neutralized particles move towards a sampler under the effect of electric field and dual ion winds. Since there is no electrode or sampling chip installed inside the air-flow channel, impediments to airborne particle flow or ion winds are removed along the flow direction. In addition, the isolation of ion winds, which generate circuit, allows using various materials for the sampling chip including non-conductors and also protecting collected particles from any discharge ignition on the chip. The device mechanism is numerically simulated in OpenFOAM to study the electrofluidodynamic interaction of charged particles and bipolar ion winds. The efficiency of the new approach has been investigated by experiment with a maximum efficiency of 94%. The effects of flow rate, discharge voltage and electrode distances on the method are also evaluated.

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Section: Governing Equations and Boundary Conditionsmentioning

confidence: 99%