Plasma‐Assisted Ignition and Combustion

Starikovskaia, Svetlana; Starikovskii, Andrei

doi:10.1002/9783527628148.hoc075

Cited by 47 publications

(41 citation statements)

References 83 publications

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“…The most common application is the use of TPs for spark ignition in automotive and aerospace engines [11]. Less common is the use of arc discharge to facilitate ignition in coal-fired boilers [12,13].…”

Section: Plasma-assisted Combustion (Pac)mentioning

confidence: 99%

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A Phenomenological Analysis of Exergy Destruction During Hydrogen Combustion With Electronically Excited Oxygen

Washington

Shapiro

2013

Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines,

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This study investigates the effects of introducing electronically excited oxygen on trends in exergy destruction during hydrogen combustion. Electronically excited oxygen enhances many properties of combustion. By understanding how it alters the chemical kinetics, and hence the destruction of exergy, it may be possible to improve the overall exergetic efficiency of combustion thereby reducing fuel use to achieve desired energy conversion.A numerical model was developed of an adiabatic plug flow reactor using CHEMKIN-PRO; in conjunction with a hydrogen oxidation mechanism that includes explicit reaction pathways for various electronically excited species. Exergy destruction was calculated for cases where singlet oxygen composed 0%-100% of the oxidizer while maintaining a stoichiometric oxidizer-fuel ratio; all other inlet conditions were held fixed.Results show that an optimal range of exergetic combustion efficiency exists between 0%-20%, with the maximum occurring at approximately 10%. A detailed assessment of the total exergy destruction reveals that, for the optimal range of exergetic combustion efficiencies, as much as 60% of the total exergy destruction occurs prior to ignition. For inlet percentages of singlet oxygen greater than 20%, the majority of the total exergy destruction occurs after ignition. This paper examines the phenomenological events taking place in the reaction mechanism that give rise to the destruction of exergy during combustion. Understanding these mechanisms and the effects of introducing excited oxygen into the combustion process, sheds light on how we might use excited oxygen to increase the exergetic efficiency of combustion.

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Section: Plasma-assisted Combustion (Pac)mentioning

confidence: 99%

“…However, the unique properties of NTPs have demonstrated great promise toward meeting this end. NTPs enhance combustion through the formation of radicals and reactive species [9,11]. Nonthermal plasmas were selected as the focus of the present study.…”

Section: Plasma-assisted Combustion (Pac)mentioning

confidence: 99%

A Phenomenological Analysis of Exergy Destruction During Hydrogen Combustion With Electronically Excited Oxygen

Washington

Shapiro

2013

Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines,

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“…[1][2][3] The pioneering experiments 4 based on the known 5 influence of the sinusoidal power DBD discharge on the flow, demonstrated extremely high efficiency of the nanosecond DBD in control of laminar-to-turbulent transition in subsonic flows. The peculiarity of a nanosecond power supply is that the streamers start from the high voltage electrode and propagate synchronously (within 0.2 ns at atmospheric pressure 6 ) in the direction perpendicular to the electron edge.…”

Section: Introductionmentioning

confidence: 99%

Filamentation of the nanosecond surface dielectric barrier discharge at elevated pressures

Stepanyan

Попов

Starikovskaya

2014

52nd Aerospace Sciences Meeting

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Nanosecond pulsed discharge transformation with pressure is discussed. Experimental measurements present, at elevated pressures, transition from "quasi-uniform" streamer discharge to filamentary structure. Conditions of the appearance of the transition regime as a function of voltage and gas pressure are presented. It is shown that there is no increase of the deposited energy during the transition, and that the filamentary form of the discharge remains low-temperature and low-current discharge. Theoretical estimates and numerical modeling show that ionization-overheating instability on the boundary of the cathode layer can be suggested as a mechanism of filamentation.

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“…One operative condition involves the application of repetitive high-voltage pulses (usually several nanoseconds wide and with frequencies from a few hundred hertz to a few hundred kilohertz), thus the fast and localized heating of the gas creates pressure waves or even shock waves. This working condition is employed for ignition and combustion [7]. Furthermore, the pulses repetition generates pressure oscillations that are also used for flow separation control, usually with a Direct Current/Alternate Current (DC/AC) bias added to the pulses [8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Micro Dielectric Barrier Discharge Plasma Actuator for Regional Aircraft Active Flow Control

Pescini

Francioso

Giorgi

et al. 2015

IEEE Trans. Plasma Sci.

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This paper reports a multitechnique investigation of a micro dielectric barrier discharge plasma actuator (DBDPA) as a promising system to control separated flows. The device was manufactured through a photolithographic technique and its performances and capabilities were compared with the ones of conventional macro DBDPAs. Alternate current operation under sinusoidal voltage excitation was studied in the absence of external flow by means of many experimental techniques like discharge imaging, flow visualizations, particle image velocimetry, infrared thermography, and electrical characterization. The influence of the operating parameters was investigated. The main results underlined that an increase in the voltage amplitude or frequency brought to a rise in the maximum induced velocity, electrical power dissipation, and actuator surface temperature. Moreover, it was assessed that the small heating of the micro DBDPA did not affect the actuated flow. A jet velocity up to 1.36 m/s was obtained at a 9.01 W/m electrical power dissipation per unit electrode length. The device realized by microelectronic fabrication technology allowed reaching a flow velocity magnitude comparable with the one of conventional macro DBDPAs, with a reduction in applied voltage, power dissipation, and actuator size. Furthermore, the induced wall jet was more confined in the area in proximity of the device, because of the limited plasma discharge extension.Index Terms-Micro plasma actuator, dielectric barrier discharge, discharge imaging, non-thermal plasma, plasma induced flow, plasma electrical properties. Her current research interests include the experimental and numerical characterization of dielectric barrier discharge plasma actuators for the control of boundary layer separation and bypass transition, and for plasma assisted combustion.Luca Francioso received the M.Sc. degree in physics from the since 2001, where he is involved in the field of silicon micromachined systems and solid-state chemical sensor as a Researcher. He has been a Permanent Researcher with the Institute for Microelectronic and Microsystems since 2008, where he is involved in the field of microelectromechanical (MEMS) systems technology, FEA simulation, sensors engineering, and wearable energy scavenging devices. He coordinated the Sensors and Microsystems Group MEMS activity in different European funded, national, and regional projects. He has authored over 65 scientific publications in national and international journals, and many communications and invited talks to international conferences. Maria Grazia DeGiorgi received the Diploma (Hons.) degree in industrial fluid dynamics from the Von Karman Institute, Bruxelles, Belgium, in 2001, and the University Doctorate degree in energy system and environment from the University of Salento, Lecce, Italy, in 2003.She is currently an Assistant Professor of Aerospace Propulsion with the Faculty of Engineering, University of Salento. Her main research and professional activities were carried out in the fields of aerospac...

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Plasma‐Assisted Ignition and Combustion

Abstract: The sections in this article are Introduction General Principles Combustion Initiation and Plasma: Fundamentals Plasma Used for Combustion Initiation Experimental Evidences and Analysis of Mechanism Ignition by Plasma under Conditions of Supersonic Flows Discharges in Low Spee… Show more

Cited by 47 publications

References 83 publications

A Phenomenological Analysis of Exergy Destruction During Hydrogen Combustion With Electronically Excited Oxygen

A Phenomenological Analysis of Exergy Destruction During Hydrogen Combustion With Electronically Excited Oxygen

Filamentation of the nanosecond surface dielectric barrier discharge at elevated pressures

Investigation of a Micro Dielectric Barrier Discharge Plasma Actuator for Regional Aircraft Active Flow Control

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