Altitude dependence of electrohydrodynamic flow in an electrostatic lifter

• Published in: Journal of electrostatics 2017-06, Vol.87, p.32-44
• Main Authors: Bedolla, P.O., Vorlaufer, G., Sequard-Base, P., Vernes, A., Franek, F.
• Format: Article
• Language: English
• Subjects: Corona-discharge-induced thrust; Dependence on altitude; Electrohydrodynamic flow; Finite element method; High-voltage asymmetric capacitor
• ISSN: 0304-3886; 1873-5738
• DOI: 10.1016/j.elstat.2017.03.003

Experiments carried out during the last 50 years have elucidated the basic mechanism of the Biefeld-Brown effect. Recent research has focused on establishing design rules in order to maximize the lifting force resulting from this effect. For this purpose, a numerical estimation that takes the effect of altitude into account is needed. In the present contribution, the thrust due to Biefeld-Brown effect was computed by simulating the corona-discharge-induced electrohydrodynamic flow in a widely used high-voltage asymmetric capacitor with the major goal to elucidate the dependence of thrust on the altitude, pressure, temperature and humidity, respectively. Our numerical results reproduced the experimentally observed decrease of thrust with altitude and shown that this is a consequence of various competing effects. •Computation of the thrust due to the Biefeld-Brown effect.•Simulation of the corona-discharge-induced electrohydrodynamic flow in a widely used high-voltage asymmetric capacitor.•Dependence of thrust on the altitude, pressure, temperature and humidity, respectively.•Agreement with the experimentally observed decrease of thrust with altitude.•Proof that this decrease of thrust is a consequence of various competing effects.