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Träfflista för sökning "WFRF:(Appelgren Patrik) srt2:(2009)"

Sökning: WFRF:(Appelgren Patrik) > (2009)

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1.
  • Appelgren, Patrik, et al. (författare)
  • Studies of Electrically-Exploded Conductors for Electric Armour Applications
  • 2009
  • Ingår i: Acta Physica Polonica. A. - 0587-4246 .- 1898-794X. ; 115:6, s. 1072-1074
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper presents experimental studies of current interaction with static copper rods. The results of the static experiments are used to discuss the effects responsible for the disruption of shaped-charge jets in electric armour. These effects include ohmic heating of, and current diffusion into, the rod as well as radial magnetic forces.
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2.
  • Appelgren, Patrik, et al. (författare)
  • Parametric studies of an electrohydrodynamic plasma actuator for boundary layer flow control
  • 2009
  • Ingår i: PPC '09. IEEE Pulsed Power Conference, 2009. - : IEEE. - 9781424440658 ; , s. 1069-1074
  • Konferensbidrag (refereegranskat)abstract
    • An electrohydrodynamic plasma actuator can be used as an aerodynamic flow control device. A plasma actuator is realised as a surface-mounted dielectric barrier discharge (DBD) that transfers directed energy from ions in the discharge to the surrounding air. Parametric studies have been performed in order to investigate the relative efficiency in terms of electrical power into the actuator versus mechanical power in the generated boundary flow. The parametric study includes variations of the applied driving voltage and frequency as well as different electrode and dielectric materials. It is found that, within the range tested, for each value of electrical power into the actuator there exists an optimum driving frequency in terms of boundary layer flow velocity. It is also found that the same trend seems to be true when analyzing electric to mechanical efficiency of the device, i.e. for a given input power there exists an optimum driving frequency that produces the highest efficiency. However, this peak in efficiency of the actuator lies on the edge of the parametric space tested so that further experiments are needed to validate these results.
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Appelgren, Patrik (2)
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Larsson, A (1)
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