N Benard et al 2008 J. Phys. D: Appl. Phys. 41 042002 doi:10.1088/0022-3727/41/4/042002
N Benard, N Balcon and E Moreau
Show affiliationsThe effects of the ambient air pressure level on the electric wind produced by a single dielectric barrier discharge (DBD) have been investigated by Pitot velocity measurements. Pressures from 1 down to 0.2 atm were tested with a 32 kVp–p 1 kHz excitation. This preliminary study confirms the effectiveness of surface DBD at low pressure. Indeed, the induced velocity is strongly dependent on the ambient air pressure level. Quite surprisingly the produced airflow presents a local maximum at 0.6 atm. The measured velocities at 1 atm and 0.2 atm are 2.5 m s−1 and 3 m s−1, respectively while 3.5 m s−1 is reached at 0.6 atm. The position of the maximal velocity always coincides with the plasma extension. Mass flow rate calculations indicate that the DBD is effective in real flight pressure conditions.
Issue 4 (21 February 2008)
Received 5 December 2007, in final form 5 January 2008
Published 1 February 2008
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