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DBD plasma actuators employed for airflow control applications. [1] Typical construction of a DBD device wherein one of the two electrodes is covered with a dielectric barrier material. The lines between the dielectric and the electrode are representative of the discharge filaments, which are normally visible to the naked eye.
Interest in plasma actuators as active flow control devices is growing rapidly due to their lack of mechanical parts, light weight and high response frequency. The characteristics of a dielectric barrier discharge (DBD) plasma actuator when exposed to an unsteady flow generated by a shock tube is examined.
With the greater level of control authority that these plasma actuators may potentially possess, there is currently research being performed at several labs in the United States [17] [18] and in the United Kingdom [19] looking to apply these actuators for real world applications. Recent numerical work predicted significant turbulent drag ...
The efficiency of the plasma generation reaches 90%, while the remaining 10% of the power is lost due to mechanical and dielectric heating of the piezoelectric transformer. Due to low electric currents, typical for the dielectric barrier and the corona discharges, the piezoelectric direct discharge produces a non-equilibrium plasma.
Dense plasma focus; Dielectric barrier discharge; Diffusion damping; DIII-D (tokamak) Dimensional analysis; Diocotron instability; Direct-current discharge; Directed-energy weapon; Direct bonding; distribution function; Divertor; Doppler broadening; Doppler effect; Double layer (plasma) Dual segmented Langmuir probe, Non-Maxwellian Features in ...
Electrical breakdown in an electric discharge showing the ribbon-like plasma filaments from a Tesla coil.. In electronics, electrical breakdown or dielectric breakdown is a process that occurs when an electrically insulating material (a dielectric), subjected to a high enough voltage, suddenly becomes a conductor and current flows through it.
Dielectric barrier discharge (DBD) is one of the main ways to produce low-temperature plasmas in a non-equilibrium condition at atmospheric pressure. [ 4 ] [ 5 ] Additionally, there have been reports stating that the Atmospheric-pressure glow discharge, when powered by a low-frequency (10-100 kHz) source, needs a dielectric barrier on one side ...
A corona discharge occurs at locations where the strength of the electric field (potential gradient) around a conductor exceeds the dielectric strength of the air. It is often seen as a bluish glow in the air adjacent to pointed metal conductors carrying high voltages, and emits light by the same mechanism as a gas discharge lamp ...
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