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24 Aug 2009

Volume 95, Issue 8, Articles (08xxxx)

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Appl. Phys. Lett. 95, 082507 (2009); http://dx.doi.org/10.1063/1.3186782 (3 pages)

Sang-Koog Kim, Ki-Suk Lee, and Dong-Soo Han
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Flow shaping using three-dimensional microscale gas discharge

Chin-Cheng Wang and Subrata Roy

Appl. Phys. Lett. 95, 081501 (2009); http://dx.doi.org/10.1063/1.3216046 (3 pages) | Cited 2 times

Online Publication Date: 28 August 2009

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We introduce a flow shaping mechanism using surface compliant microscale gas discharge. A three-dimensional finite element-based multiscale ionized gas flow code is utilized to analyze charge separation, potential distribution, and flow inducement mechanism. For the case of quiescent flow, a horseshoe-shaped plasma generator is introduced. Due to its unusual shape, the three-dimensional electric force excites a pinching effect on the fluid inside selectively powered electrode arc. Such effect is capable of tripping the flow-ejecting fluid normal to the plane of the actuator and thus can be very useful for many applications.
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52.30.-q Plasma dynamics and flow
52.80.Mg Arcs; sparks; lightning; atmospheric electricity
52.50.Nr Plasma heating by DC fields; ohmic heating, arcs
52.58.Lq Z-pinches, plasma focus, and other pinch devices
02.70.Dh Finite-element and Galerkin methods
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