Flow Separation Control by Plasma Actuator With Nanosecond Pulse Periodic Discharge

Roupassov, Dmitry; Nikipelov, Andrey; Nudnova, Maryia; Starikovskii, Andrei

doi:10.2514/6.2008-1367

Cited by 46 publications

(66 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using this result, we calculated a peak number density of  1/ft 3 ( 1/m 3 ) using equation 18 coupled with equation 4 where , the number density before the pulse, was set equal to 1/ft 3 ( 1/m 3 ). The height of the plasma, , was determined to be a constant 0.02 in ( mm) over time based on experimental observations by Roupassov et al (1). Thus using the calculated values for and as well as the experimentally observed , we obtained a value of Btu (2.6 mJ) by using equation 7.…”

Section: Resultsmentioning

confidence: 99%

“…The "hot spot," observed by Roupassov et al (1), plays an important role in the power dissipated into the air and thus the resulting fluid dynamics. In this study, only the spatially homogeneous hot-spot region was considered.…”

Section: Theoretical Developmentmentioning

confidence: 99%

“…However, the actuators that affect the flow via directed momentum transfer are not effective at Mach numbers associated with most subsonic aircraft applications. Recently, Roupassov et al (1) demonstrated that pulsed plasma actuators, in which energy imparted to the flow appears to effectively control flow separation, seem to be suitable at Mach numbers (M ≈ 0.3) beyond the capabilities of the current plasma-induced momentum-based approaches.…”

Section: Introduction/backgroundmentioning

confidence: 99%

See 2 more Smart Citations

Development of a Lumped Element Circuit Model for Approximation of Dielectric Barrier Discharges

Underwood¹

2011

View full text Add to dashboard Cite

Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. This work presents a circuit model for calculating the total energy dissipated into neutral species for pulsed direct current (DC) dielectric barrier discharge (DBD) plasmas. Based on experimental observations, it is assumed that nanosecond pulsed DBDs, which have been proposed for aerodynamic flow control, can be approximated by the two independent regions of a homogeneous electric field. An equivalent circuit model is developed for the homogeneous region near the exposed electrode, i.e., the ?hot spot,? based on a combination of a resistor, capacitors, and a zener diode. Instead of fitting the resistance to an experimental data set, a formula is established for approximating the resistance by modeling a plasma as a conductor with DC voltage applied to it. Various assumptions are then applied to the governing Boltzmann kinetic energy equation to approximate electrical conductivity values for weakly ionized plasmas. The model is compared with experimental data sets of the total power dissipated by a plasma to validate its accuracy.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Theoretical Developmentmentioning

confidence: 99%

Section: Introduction/backgroundmentioning

confidence: 99%

See 1 more Smart Citation

Development of a Lumped Element Circuit Model for Approximation of Dielectric Barrier Discharges

Underwood¹

2011

View full text Add to dashboard Cite

show abstract

“…Dielectric barrier discharge (DBD) plasma actuators have been widely studied both experimentally and numerically [1][2][3][4][5][6][7][8][9]. First successful flow separation control experiments were performed by Roth et al [1] using DBD plasma actuators, driven by low-frequency sinusoidal signal.…”

Section: Introductionmentioning

confidence: 99%

“…Numerical study of the DBD operation is conventionally based on two plasma modeling approaches -fluid and kinetic plasma description. Font et al treated plasma kinetically using PIC-DSMC code and predicted Townsend type of the discharge [6]. Recently, majority of the groups used fluid approach (drift-diffusion approximation) to either describe the breakdown stage of the discharge or plasma decay stage [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Simulations of Nonequilibrium Plasmas

Likhanskii

2011

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. The paper presents study of one of the examples of nonequilibrium plasmas -dielectric barrier discharge in atmospheric air -using kinetic particle-in-cell code VORPAL. It has been demonstrated that the use of state-ofthe-art methods for solution of the electrostatic problems and the concept of variable-weight particles for reduction number of particles in dense plasma regions made simulations numerically efficient. Using the developed model the propagation of the cathode-directed streamer driven by 4ns positive pulse has been analyzed in both 2D and 3D. The model reproduced all essential physical phenomena of the streamer propagation. The model has been validated via grid resolution study and study of the concept of variable-weight particles.

show abstract

Plasma Dynamics and Flow Control Applications

Adamovich

2010

Encyclopedia of Aerospace Engineering

View full text Add to dashboard Cite

Over the last decade, there has been considerable interest in the use of plasmas generated over high‐speed vehicles for flow control and energy management. Plasma flow control does not use moving parts, and can be turned on and off on a very short time scale. In laboratory experiments, thermal plasmas, laser‐induced breakdown, as well as various types of surface and volume‐filling electric discharge plasmas, have been widely used to modify both subsonic and supersonic flows. Potential plasma flow control applications include drag reduction, boundary layer separation and transition control, mixing enhancement, shock wave modification, wave drag reduction, and on‐board electrical power generation. Primary mechanisms of plasma flow control include magnetohydrodynamic (MHD) and electrohydrodynamic (EHD) interactions, as well as thermal methods using Joule heating of the flow. This article provides a brief overview of the main concepts and methods of plasma flow control.

show abstract

Flow Separation Control by Plasma Actuator With Nanosecond Pulse Periodic Discharge

Cited by 46 publications

References 10 publications

Development of a Lumped Element Circuit Model for Approximation of Dielectric Barrier Discharges

Development of a Lumped Element Circuit Model for Approximation of Dielectric Barrier Discharges

Kinetic Simulations of Nonequilibrium Plasmas

Plasma Dynamics and Flow Control Applications

Contact Info

Product

Resources

About