Ignition in Premixed Hydrocarbon-Air Flows by Repetitively Pulsed, Nanosecond Pulse Duration Plasma

Lou, Guofeng; Bao, Ainan; Nishihara, Munetake; Keshav, Saurabh; Utkin, Yurii; Adamovich, Igor

doi:10.2514/6.2006-1215

Cited by 27 publications

(32 citation statements)

References 12 publications

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“…Similar results for additional heating in fuel-containing mixtures at low pressures (hundreds of torrs) were obtained in, 161 where additional heating in fuel-containing mixtures was equal to hundreds K. But it seems that such great value was obtained due to additional heating of initial mixture by heat transfer from the flame zone.…”

Section: Temperature Measurementssupporting

confidence: 68%

“…161 A high voltage (16 − 18 kV) nanosecond (20 − 30 ns duration) pulsed power with repetitive frequency up to 50 kHz was applied to the electrodes within a pressure range of 70-100 Torr. The discharge power was as low as 70 − 115 W, and the gas temperature was 100 − 300 o C. It is important that the authors demonstrated flameless oxidation by plasma or ignition while increasing the energy input in the discharge during the same experiments.…”

Section: 152mentioning

confidence: 99%

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Plasma-assisted combustion

Starikovskii

Anikin

Kosarev

et al. 2006

Pure and Applied Chemistry

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Public reporting burden for this 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. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information , 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY)12-03-2007 REPORT TYPE Final Report DATES COVERED (From -To AUTHOR(S)Professor Andrei Y Starikovskii 5e. WORK UNIT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Moscow Institute of Physics and Technology 9 Institutski Lane Dolgoprudny 141700 Russia PERFORMING ORGANIZATION REPORT NUMBERN/A SPONSOR/MONITOR'S ACRONYM(S) 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)EOARD PSC 821 BOX 14 FPO AE 09421-0014 SPONSOR/MONITOR'S REPORT NUMBER(S)CRDF 02-9003 DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTThis report results from a contract tasking Moscow Institute of Physics and Technology as follows: The contractor will investigate the use of high voltage, nano-second plasma discharges to ignite and efficiently combust fuel/air mixtures in high speed flows. This strongly nonequilibrium low-temperature plasma has a high mean energy of electrons and will provide a source of reactive atoms, radicals, and excited molecules which has been shown to enhance ignition and combustion. The short duration of the pulses results in relatively low power requirements for generating the discharge. The goal is to demonstrate and understand the physics of energy exchange, ignition and combustion . Also, the use of this type of plasma for aerodynamic flow control will be investigated. Finally, applicability to use this type of discharge to directly initiate a detonation wave will be investigated. Chapter 1 SUBJECT TERMS AbstractA review was made which discusses different types of the discharges applied for plasma assisted ignition and combustion. Special attention to experimental and theoretical analysis of some plasma parameters was given, such as reduced electric field, electron density and energy branching for different gas discharges. Streamers, pulsed nanosecond discharges, dielectric barrier discharges, radio frequency discharges, atmospheric pressure glow discharges are considered. Detailed measurements of the parameters of a streamer flash development in the air for the pressure range 90-1300 Torr have been carried out in the plane-to-plane geometry for 20-42 ...

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Section: Temperature Measurementssupporting

confidence: 68%

Section: 152mentioning

confidence: 99%

Plasma-assisted combustion

Starikovskii

Anikin

Kosarev

et al. 2006

Pure and Applied Chemistry

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“…The source term qЈЈЈ in eqn (7i) accounts for heat addition by the ignitor over the energy deposition period. The source term qЈЈЈ is assumed to follow a Gaussian distribution in the radial direction from the center of the ignitor [1,2,4,[19][20][21][22][23][24][26][27][28][29]:…”

Section: Mathematical Backgroundmentioning

confidence: 99%

Effects of Energy Deposition Characteristics on Localised Forced Ignition of Homogeneous Mixtures

Patel

Chakraborty

2015

International Journal of Spray and Combustion Dynamics

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The effects of the characteristic width of the energy deposition profile and the duration of energy deposition by the ignitor on localised forced ignition of stoichiometric and fuel-lean homogeneous mixtures have been analysed using simplified chemistry three-dimensional compressible Direct Numerical Simulation (DNS) for different values of root-mean-square turbulent velocity fluctuation. The localised forced ignition is modelled using a source term in the energy transport equation, which deposits energy in a Gaussian manner from the centre of the ignitor over a stipulated period of time. It has been shown that the width of ignition energy deposition and the duration over which ignition energy is deposited have significant influences on the success of ignition and subsequent flame propagation. An increase in the width of ignition energy deposition (duration of energy deposition) for a given amount of ignition energy has been found to have a detrimental effect on the ignition event, which may ultimately lead to misfire. Moreover, an increase in uЈ gives rise to augmented heat transfer rate from the hot gas kernel, which in turn leads to a reduction in the extent of overall burning for both stoichiometric and fuel-lean homogeneous mixtures but the detrimental effects of high values of uЈ on localised ignition are particularly prevalent for fuel-lean mixtures.

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“…These studies have examined: pre-treatment of the fuel or reactants into hydrogen-rich syngas prior to combustion [11][12], enhanced ignition of hydrocarbon fuels [5,10,13], increased stability of combustion at atmospheric pressure [4,[14][15][16] and enhanced combustion efficiency [17]. In particular, plasmas have shown great promise in improving the stability of high-speed ignition and combustion for supersonic propulsion systems [1,3,[18][19][20][21], allowing for operation with greater efficiency, stability and power over a broad range of supersonic velocities.…”

Section: Plasma Energy Coupling For Combustion Enhancementmentioning

confidence: 99%

“…When plasma energy is coupled into the reaction zone of a flame as shown in Figure 1, a dramatic increase in electrons and ions impact the reaction pathways and increase the rate of chemical energy conversion. A number of different plasmas, including thermal plasma [19], dielectric barrier discharge [16], nanosecond pulsed discharge [13], pulsed corona discharge [23], RF discharge [17], DC or low frequency AC discharges [24], plasmatron [25] and microwave discharge [26] have been demonstrated in the laboratory. A more extensive review can be found in [2].…”

Section: Plasma Energy Coupling For Combustion Enhancementmentioning

confidence: 99%

Optimization of a Small-Scale Engine Using Plasma Enhanced Ignition

Lee¹

2013

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Ignition in Premixed Hydrocarbon-Air Flows by Repetitively Pulsed, Nanosecond Pulse Duration Plasma

Cited by 27 publications

References 12 publications

Plasma-assisted combustion

Plasma-assisted combustion

Effects of Energy Deposition Characteristics on Localised Forced Ignition of Homogeneous Mixtures

Optimization of a Small-Scale Engine Using Plasma Enhanced Ignition

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