Electrohydrodynamic force produced by a wire-to-cylinder dc corona discharge in air at atmospheric pressure - Archive ouverte HAL Access content directly
Journal Articles Journal of Physics D: Applied Physics Year : 2013

## Electrohydrodynamic force produced by a wire-to-cylinder dc corona discharge in air at atmospheric pressure

(1) , (2) , (3) , (3)
1
2
3
Eric Moreau
Nicolas Benard
Jean-Daniel Lan Sun Luk
• Function : Author
• PersonId : 965436
Jean-Pierre Chabriat

#### Abstract

Wire-to-cylinder corona discharges are studied to better understand the electrohydrodynamic (EHD) phenomena that govern the performances of electric propulsion systems. First, theory associated with EHD thrusters is presented in order to be compared with experimental results. Secondly, direct thrust measurements are carried out to optimize the electrical and geometrical parameters of such devices. The main results are as follows: (1) the discharge current I is proportional to the square root of the grounded electrode diameter and to 1/d2 where d is the electrode gap; (2) for d ≤ 20 mm, the mobility of negative ions is higher than that of positive ions while the mobility of both ions is equal for higher gaps; (3) therefore, for gap ≥30 mm, positive and negative coronas results in the same current-to-thrust conversion; (4) the current-to-thrust conversion is equal to 33 N A−1 per centimetre of gap, and it is proportional to the gap; (5) the thruster effectiveness θ increases with $\sqrt d$ , decreases with the square root of thrust and reaches about 15 N kW−1 for d = 40 mm; (6) the force computed from experimental velocity profiles is overestimated compared with the values measured with a balance, showing that this method cannot be used for thrust determination.

#### Domains

Physics [physics]

### Dates and versions

hal-01691632 , version 1 (24-01-2018)

### Identifiers

• HAL Id : hal-01691632 , version 1
• DOI :

### Cite

Eric Moreau, Nicolas Benard, Jean-Daniel Lan Sun Luk, Jean-Pierre Chabriat. Electrohydrodynamic force produced by a wire-to-cylinder dc corona discharge in air at atmospheric pressure. Journal of Physics D: Applied Physics, 2013, 46 (47), ⟨10.1088/0022-3727/46/47/475204⟩. ⟨hal-01691632⟩

### Export

BibTeX TEI Dublin Core DC Terms EndNote Datacite

146 View