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Showing 1 to 10 of 10 for “"plasma actuator"”.
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Development of UAV flight test demonstrator for cyclotronic arc-plasma actuator
… flow control device known as the Cyclotronic Arc-Plasma Actuator (CAPA) actuator is being developed. This actuator uses a series of magnets and electrodes to produces a sweeping plasma arc that can induce a swirling component on a flow. One potential application of this technology is for active …
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Numerical Simulation of Plasma-Based Actuator Vortex Control of a Turbulent Cylinder Wake
… of a circular cylinder that is controlled by a plasma actuator. The numerical investigation implements a straightforward moving wall boundary condition to model the actuator's effects on the flow. Validations of the moving wall for this simulation are set forth with the understanding that the …
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Improvement In Acoustic Liner Attenuation In Turbofan Engines By Means Of Plasma Synthetic Jet Actuator
… are efficient attenuators of engine noise. Plasma actuators have been used as flow control devices in other settings and will now be studied as an enhancement for acoustic liners. A plasma actuator can excite oscillatory flow or a single direction (bias flow). Both flow types are studied as …
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Characterization of flow control using programmable multi-directional plasma actuators
This research explores the use of a novel plasma actuator geometry and electrical configuration to generate directionally programmable flow fields near the surface of arrays of such plasma actuators. Plasma actuators are unique ionothrusters which are reliant on geometry to define flow …
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Control of supersonic axisymmetric base flows using passive splitter plates and pulsed plasma actuators
… energy deposition from multiple electric-arc plasma discharges placed around the base. The flow-control authority of both methodologies was evaluated with experimental diagnostics including particle image velocimetry, schlieren photography, surface flow visualization, pressure-sensitive paint, …
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Design of Optical Measurements for Plasma Actuators for the Validation of Quiescent and Flow Control Simulations
The concept of plasma flow control is a relatively new idea based on using atmospheric plasma placed near the edge of an air foil to reduce boundary layer losses. As with any new concept, it is important to be able to quantify theoretical assumptions with known experimental results for validation. …
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Active control of massively separated high-speed/base flows with electric arc plasma actuators
… to evaluate the effects of electric arc plasma actuators on high-speed separated flows. Two underlying goals motivated these experiments. The first goal was to provide a flow control technique that will result in enhanced flight performance for supersonic vehicles by altering the …
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Active and hybrid flow control in S-ducts and diffusers
… The objectives were to develop flow control actuators, investigate their mechanism, and study their application on different flow-fields. Two flow control actuators - a pneumatic and a plasma-based one - were developed. On an applied level, the control authority of the actuators on flow …
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Fundamental physics and application of plasma actuators for high-speed flows
… detailed investigation is given discussing three plasma-based flow control methods. These methods included plasma generated by laser energy, microwaves, and electric arc. The plasma generated by laser energy was also applied to a sonic transverse jet in a supersonic cross flow. Lastly, the …
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Characterization of thermo-chemical properties of electric arc plasma actuators
Made available in DSpace on 2012-05-22T00:32:49Z (GMT). No. of bitstreams: 3 Sanders_Bradley.pdf: 3950226 bytes, checksum: 6d13168dd33011bda773e827fa05155e (MD5) Sanders_Bradley.docx: 27837244 bytes, checksum: bca4e05988b21491e4ef301725bb4666 (MD5) license.txt: 4065 bytes, checksum: …