Effect of Mesh Electrodes Geometry on the Ozone Concentration in the Presence of Micanite Dielectric

Numerous studies are conducted to improve the fl ow in the boundary layer to ensure laminar fl ow and in particular to increase fl ight safety. A new solution used to improve the laminar fl ow is the plasma actuator. The classic confi guration of DBD plasma actuators is commonly used with the asymmetric electrode system. The manuscript describes the results of tests with a plasma actuator. Experimental tests were carried out on the built model of the wing with the SD 7003 profi le, a plasma actuator was mounted on the upper surface. In contrast to the commonly used solution with solid tape copper electrodes, the novelty in the described research in the manuscript is the use of a large GND electrode (covering 70% of the upper surface of the wing) and a HV mesh electrode. The use of a plasma actuator on the upper surface of the wing aff ects the air fl ow in the boundary layer as a result of air ionization. The tests were carried out for a supply voltage from V = 7.0 kV to 12 kV and Reynolds number, R e = 87500 to 240000, fl ow velocity during the tests in the tunnel was in the range of U = 5-15 m/s and the angle of attack α = 5-15 degrees. On the basis of the results experimental tests, the percentage change in the lift coeffi cient was calculated for the switched on and off DBD system. The obtained results indicate a maximum 17% increase in the lift coeffi cient for the plasma actuator activated for air fl ow U = 5 m/s and angle of attack α = 5 degrees. In the remaining confi gurations, changes in the lift coeffi cient amounted to 4%.

Section: Resultsmentioning

confidence: 99%

Application of Plasma Actuator with Two Mesh Electrodes to Active Control of Boundary Layer at 50 Hz Power Supply

Gnapowski¹,

Pytka²,

Gnapowski³

et al. 2023

“…As a result of flexible collisions between the migrating charged particles and inert air particles, the neutral ones increase their rate, causing an "Electric wind" that takes place in close proximity to the surface [6]. The operation of the plasma actuator depends on many factors, among others; dielectric type [5,7], power supply system (voltage, frequency, pulse width), air flow speed, geometry [2,3] and number of electrodes [9].…”

Section: The Use Of Dbd Barrier Discharges To Control the Flow Of Thementioning

confidence: 99%

Review of Selected Methods for Increasing the Aerodynamic Force of the Wing

Gnapowski¹

2019

Self Cite

The manuscript presents the methods of increasing the aerodynamic force of the airfoil, currently used in aviation, and the directions of further research development. Currently, several methods are known and used to increase the aerodynamic force of the airfoil. The most widespread ones include wing mechanization systems, among others, flaps and slats. The non-mechanical elements of the wing construction that enable to increase the carrying force are used as well, among others; wing cuffs, vortilons, vortex generator. Research is being carried out on the introduction of mechanical elements that increase the lift force (Continuous Trailing Edge Flap, Morphing Wing), as well as non-mechanical elements such as plasma actuators. The manuscript describes the selected non-mechanical and mechanical elements currently used to increase the lift and the directions for the development of further research on increasing the aerodynamic force.

“…Registered oscillograms of the Lissajous figure allowed to calculate the power delivered to the DBD plasma actuator, selected Lissajous figures are shown in Figure 9 at V = 12.5 kV and V = 13.5 kV power supply voltage. In the experimental studies carried out, the discharge power was in the range of P = 1.0 W to 2.2 W, with the supply voltage from the most important ones include: power supply frequency, dielectric type [22], distance between electrodes, electrode geometry [23,25]. In the experimental tests carried out, a high-voltage power supply operating at a frequency of ƒ = 50Hz was used to power the DBD plasma actuator.…”

Section: Experimental Research Of Plasma Actuator With Two Mesh Electmentioning

confidence: 99%

Plasma Actuator with Two Mesh Electrodes to Control the Flow Boundary Layer

Gnapowski

2019

Self Cite

The manuscript presents selected designs of Dielectric Barrier Discharge (DBD) plasma actuators used to control the flow of the boundary layer on the surface of the wing. The principle of DBD plasma actuator operation and the process of the "ion wind" formation are presented. The manuscript presents the results of the tests carried out on the sash model with the SD 7003 profile and a DBD plasma actuator with two mesh electrodes, for which tests were carried out and tunnel images were recorded.