Boundary layer flow control with a One Atmosphere Uniform Glow Disclharge Surface Plasmaa

by J. Reece Roth

Publisher: American Institute of Aeronautics and Astronautics, Publisher: National Aeronautics and Space Administration, Publisher: National Technical Information Service, distributor in Reston, Va, [Washington, DC, Springfield, Va

Written in English
Published: Downloads: 335
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Subjects:

  • Boundary layer flow.,
  • Boundary layer control.,
  • Plasmas (Physics),
  • Wind tunnel tests.,
  • Data acquisition.,
  • Glow discharges.

Edition Notes

StatementJ. Reece Roth and Daniel M. Sherman and Stephen P. Wilkinson.
Series[NASA contractor report] -- 207309., NASA contractor report -- NASA CR-207309.
ContributionsSherman, Daniel M., Wilkinson, Stephen P., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15547651M

A feedback control system for mitigating flow separation was developed by using a string-type dielectric-barrier-discharge (DBD) plasma actuator and a fiber Bragg grating (FBG) sensor. Tangential jets were induced from the string-type DBD plasma actuator, which was located at 5% chord from the leading edge of an NACA airfoil. The FBG sensor was attached to the interior surface near the. The present invention relates to apparatus for influencing fluid flow over a surface, and more particularly, but not exclusively, to turbulent boundary layer flow drag reduction for an aircraft. The present invention provides such apparatus including a plasma generator comprising a first electrode and a signal generator, the apparatus being operable to drive the first electrode with a pulsed. This Note reports the results of an experimental study of active flow control of boundary-layer separation with a novel phased-array dielectric barrier discharge (DBD) plasma actuator. The flow of interest is flow over the suction surface of a low-pressure turbine (LPT) airfoil: specifically, the “Pak-B” airfoil that was the subject of many. The One Atmosphere Uniform Glow Discharge Plasma (OAUGDP) is capable of operating at one atmosphere in air and other gases, and its active species can be used, among other things, to sterilize and decontaminate surfaces. The OAUGDP reactor with plasma on can be modeled as two or three capacitors in parallel with a resistor.

Plasma stealth is a proposed process to use ionized gas to reduce the radar cross-section (RCS) of an ctions between electromagnetic radiation and ionized gas have been extensively studied for many purposes, including concealing aircraft from radar as stealth s methods might plausibly be able to form a layer or cloud of plasma around a vehicle to deflect or. plasma accelerator device, the so called One Atmosphere Uniform Glow Discharge Plasma (OAUGDPTM) [1]. This is a relatively simple RF device and has been proposed as a plasma actuator generating electrohydrodynamics (EHD) body forces, allowing boundary layer flow control [1]. It operates on displacements currents and gives rise to. USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords airfoil boundary layer air friction electric Prior art date Legal status (The legal status is an assumption and is not a .   Glow discharge at atmospheric pressure using a dielectric barrier discharge can induce fluid flow, and can be used for active control of aerodynamics and heat transfer. In the present work, a modeling framework is presented to study the evolution and interaction of such athermal nonequilibrium plasma discharges in conjunction with low Mach.

Aerodynamic flow acceleration using paraelectric and peristaltic electrohydrodynamic effects of a One Atmosphere Uniform Glow Discharge Plasma The development of the One Atmosphere Uniform Glow Discharge Plasma has made it possible to cover the wings and fuselage of aircraft with a thin layer of glow discharge plasma at low energy cost. Dielectric barrier discharge control of a turbulent boundary layer in a supersonic flow. Plasma actuators for aeronautics applications - State of art review. Aerodynamic flow acceleration using paraelectric and peristaltic electrohydrodynamic effects of a One Atmosphere Uniform Glow Discharge Plasma. Shock Wave Boundary Layer Interaction. - The Industrial Plasma Engineering Group of the UTK Plasma Sciences Laboratory has been supported by NASA Grant NCC since October 1, to develop the applications of a One Atmosphere Uniform Glow Discharge Plasma to aerodynamic boundary layer and flow control. These and related applications are described in U. S. Patent 5,, fused to create a uniform glow. The small time scale of the discharge limits charge transport and induces minimal heat-ing of the bulk gas.9,15 Thus, most of the electric energy is utilized for exciting the carrier gas, resulting in efficient ap-plications to boundary layer flow actuation. Interestingly, one atmosphere uniform glow discharge.

Boundary layer flow control with a One Atmosphere Uniform Glow Disclharge Surface Plasmaa by J. Reece Roth Download PDF EPUB FB2

Boundary layer flow control with a one atmosphere uniform glow discharge surface plasma. The One Atmosphere Uniform Glow Discharge Plasma (OAUGDP)—A Platform Technology for the 21st Century.

IEEE Transactions on Plasma Science, Vol. 35, No. Abstract. Low speed wind tunnel data have been acquired for planar panels covered by a uniform, glow-discharge surface plasma in atmospheric pressure air known as the One Atmosphere Uniform Glow Discharge Plasma (OAUGDP).

Streamwise and spanwise arrays of flush, plasma-generating surface electrodes have been studied in laminar, transitional, and fully turbulent boundary layer flow. P.: “Boundary Layer Flow Control with a One Atmosphere Uniform Glow Discharge Surface Plasma By J. Reece Roth, Daniel M.

Sherman, Stephen P. Wilkinson, J. Reece Roth, Daniel M. Sherman and Stephen P. Wilkinson T. Boundary layer flow control with a one atmosphere uniform glow discharge surface plasma کنترل جریان لایه مرزی با استفاده از پلاسمای سطح تخلیه یک اتمسفر،. BibTeX @INPROCEEDINGS{Roth_p.:“boundary, author = {J.

Reece Roth and Daniel M. Sherman and Stephen P. Wilkinson and J. Reece Roth and Daniel M. Sherman and Stephen P. Wilkinson T}, title = {P.: “Boundary Layer Flow Control with a One Atmosphere Uniform Glow Discharge Surface Plasma}, booktitle = {AIAA PaperProc.

of the 36th AIAA Aerospace Sciences Meeting & Exhibit}, year. We have demonstrated the use of Lorentzian momentum transfer from the One Atmosphere Uniform Glow Discharge Plasma (OAUGDP) to exert electrohydrodynamic (EHD) body forces on aerodynamic flows using two physical processes [1].

One process is the use of paraelectric (the electrostatic analog of paramagnetism) flow acceleration by a surface OAUGDP generated by asymmetric plasma actuators. Boundary Layer Flow Control with a One Atmosphere Uniform Glow Discharge Surface Plasma Low speed wind tunnel data have been acquired for planar panels covered by a uniform, glow-discharge surface plasma in atmospheric pressure air known as the One Atmosphere Uniform Glow Discharge Plasma (OAUGDP).

Streamwise and spanwise arrays of flush, plasma-generating surface. Multiple flow diagnostics have been applied to planar panels revered by strips of glow-discharge surface plasma in atmospheric pressure air generated by the one atmosphere uniform glow discharge.

In book: New Results in Boundary layer flow control with a one atmosphere uniform glow discharge surface plasma Low speed wind tunnel data. Abstract. The development of the One Atmosphere Uniform Glow Discharge Plasma has made it possible to cover the wings and fuselage of aircraft with a thin layer of glow discharge plasma at low energy cost.

This plasma layer provides, through Lorentzian collisions, a purely electrohydrodynamic coupling between an electric field and the neutral gas in the boundary layer. J.R. Roth, D.M. Sherman and S.P. Wilkinson, Boundary layer flow control with a one atmosphere uniform glow discharge surface plasma, AIAA Paper   The term “plasma actuator” has been a part of the fluid dynamics flow control vernacular for more than a decade.

A particular type of plasma actuator that has gained wide use is based on a single dielectric barrier discharge (SDBD) mechanism that has desirable features for use in air at atmospheric pressures. For these actuators, the mechanism of flow control is through a generated.

The time-averaged boundary layer flow over the flat plate obtained by pairs of PIV images for the baseline case without the plasma actuation are shown in Fig.

The mean flow of the boundary layer is quite uniform and the distribution of the velocity is regular as shown in Fig. 4(a). P.: “Boundary Layer Flow Control with a One Atmosphere Uniform Glow Discharge Surface Plasma by J.

Reece Roth, Daniel M. Sherman, Stephen P. Wilkinson, J. Reece Roth, Daniel M. Sherman, Stephen P. Wilkinson T - AIAA PaperProc. of the 36th AIAA Aerospace Sciences Meeting & Exhibit.

The induced flow field in the vicinity of a single, symmetric, AC plasma actuator has been studied in initially static air at atmospheric pressure. Hot-wire and cold-wire anemometry, together with.

Control of Separation in Turbine Boundary Layers,” Electrohydrodynamic Flow Control with a Glow-Discharge Surface Plasma,” AIAA J., 38 Manipulating Aerodynamic Boundary Layers Using an Electrohydrodynamic Effect Generated by a One Atmosphere Uniform Glow Discharge Plasma,” Master’s thesis, University of Tennessee, Knoxville, TN.

Another type of discharge may be used to limite the glow-to-arc transition: the barrier discharge (DBD), perfected by Roth in This plasma actuator is composed by two flat electrodes flush mounted on both sides of a dielectric, as shown in Fig.

electrode is grounded and the other one is connected to a sine high voltage of several kV rms and a frequency between Hz and. The boundary layer aerodynamic flow acceleration with one atmosphere uniform induced by multiple dielectric-barrier-discharge plasma actuation were studied based on PIV.

Through double actuators alternating discharge, the multiple dielectric barrier discharge mode have been proposed and tested. The efficiencies of the plasma actuators in Pulsed-pulsed, Steady-steady, Pulsed-steady and Steady.

Predictable and uniform discharge behaviour is preferable from a flow control standpoint as well as in terms of actuator robustness. Filamentary discharge can lead to irregularities in induced flow and localized stresses on the device, which in turn can lead to premature failure.

Download: Download full-size image; Fig. Plasma generated by. Dielectric-barrier-discharge (DBD) plasma actuators are all-electric devices with no moving parts. They are made of a simple construction, consisting only of a pair of electrodes sandwiching a dielectric sheet.

When AC voltage is applied, air surrounding the upper electrode is ionized, which is attracted towards the charged dielectric surface to form a wall jet. In this paper, a dynamic stall control scheme for vertical-axis wind turbine (VAWT) based on pulsed dielectric-barrier-discharge (DBD) plasma actuation is proposed using computational fluid dynamics (CFD).

The trend of the wind turbine power coefficient with the tip speed ratio is verified, and the numerical simulation can describe the typical dynamic stall process of the H-type VAWT. Roth, J., Sherman, D. & Wilkinson, S. Boundary layer flow control with a one atmosphere uniform glow discharge surface plasma.

In 36th AIAA Aerospace Sciences Meeting, AIAA Paper 98– American Institute of Aeronautics and Astronautics. Liu C and Roth J R Applications of the one atmosphere glow discharge plasma to illumination and aerodynamic boundary layer control APS Bulletin Paper 8P vol 39 [2] Roth J R, Sherman D M and Wilkinson S P Boundary layer flow control with a one atmosphere uniform glow discharge surface plasma Proc.

36th AIAA Aerospace Sciences. The aerodynamic flow acceleration with one atmosphere uniform induced by dielectric-barrier-discharge plasma actuation were studied based on PIV. The flow fields induced by the dielectric barrier discharge with different discharge models and actuation parameters were investigated.

In term of the obtained velocity distributions, a comparative study on the effect of excitation voltages, carrier. Active flow control of surface dielectric barrier discharge (SDBD) plasma is a technology that converts electrical energy into kinetic energy to achieve flow control.

Its main application areas are concentrated in the aviation field. Undoubtedly, few studies have applied it in the field of automobile flow control.

Meanwhile, during high-speed driving, there is a serious airflow separation. Aerodynamic flow acceleration using paraelectric and peristaltic electrohydrodynamic effects of a One Atmosphere Uniform Glow Discharge Plasma.

Physics of Plasmas, Vol. 10, Issue. 5, p. Impact of Flow Control Technologies on Naval On the effects of lateral wall oscillations on a turbulent boundary layer. Experimental Thermal and. Plasma actuators are a type of actuator currently being developed for aerodynamic flow control.

Plasma actuators impart force in a similar way to flows control has drawn considerable attention and been used in boundary layer acceleration, airfoil separation control, forebody separation control, turbine blade separation control, axial compressor stability extension, heat.

A method for removing contaminants from a surface of a workpiece to provide a cleaned workpiece, comprising the steps of generating a steady-state, radio-frequency (RF), uniform glow discharge plasma at a pressure of about one atmosphere between electrodes using an RF power source operating at a frequency of from about Hz to about 30 kHz, and exposing the surface with.

Summary form only given. EHD plasma actuators have proven effective in delaying separation and re-attaching internal or external low speed flows in wind tunnel experiments that utilize drag balances, Pitot tubes, smoke flow visualization, and fluid dynamic modeling programs.

Recent experiments showed that with the additional momentum from a single plasma actuator on its leading edge, the stall. Roth J R, Sherman D M and Wilkinson S P Boundary layer flow control with a one atmosphere uniform glow discharge surface plasma AIAA Meeting (Reno, USA, January ) paper # [2] Shcherbakov Y V, Isanov N S, Baryshev N D, Frolovskij V S and Syssoev V S AIAA Meeting (Reno, USA, January ) paper #.

called it "One Atmosphere Uniform Glow Discharge Plasma" (OAUGDP) [11]. He tested various geometries of the electrodes, Figure His studies were focused on the control of two dimensional boundary layers on a flat plate and found a reduction in resistance when the discharge has the flow direction (co-flow) and an increase in resistance.A technique for generating active species with the One Atmosphere Uniform Glow Discharge Plasma (OAUGDP) has been developed and used to sterilize and increase the surface energy, wettability and wickability of nonwoven fabrics.The majority of industrial plasma processing with glow discharges has been conducted at pressures below 10 torr.

This tends to limit applications to high value workpieces as a result of the high capital cost of vacuum systems and the production constraints of batch processing. It has long been recognized that glow discharge plasmas would play a much larger industrial role if they could be.