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Dr. Sergey B. Leonov
Department of Aerospace and Mechanical Engineering, College of Engineering, University of Notre Dame, 109 Hessert Lab, Notre Dame, IN 46556, USA

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Research Keywords & Expertise

0 Aerothermodynamics
0 hypersonics
0 Experimental plasma aerodynamics
0 Weakly ionized plasma generation
0 Flow actuation by electrical discharges

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Plasma-assisted combustion
High-speed combustion

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Journal article
Published: 01 April 2021 in AIAA Journal
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A novel configuration of focused laser differential interferometry (FLDI) was developed, simulated, and tested. The new configuration is referred to as cylindrical FLDI or CFLDI. Using cylindrical lenses in place of standard lenses changes the three-dimensional shape of the focusing beam from a cone shape for FLDI to a triangular sheet for CFLDI, allowing for probing of flat-plate boundary layers closer to the wall. The beam propagation and interference pattern were modeled to determine the transfer functions for one-dimensional sinusoidal disturbances of varying wavelength (k=101–106 m−1) and varying spanwise thickness (L=0–0.076 m) of the tested area. CFLDI was employed to measure the density perturbations in supersonic blowdown wind tunnel SBR-50 at the University of Notre Dame with the test section width of 0.076.2 m. It was determined that the CFLDI system sufficiently filtered the sidewall boundary layers to measure the spectra of density fluctuations in a plane wall boundary layer. However, accurate measurements of the density disturbances in the freestream flow must account for the contribution of the sidewall boundary layers. This serves as an initial validation of the CFLDI maintaining spatial filtering similar to a regular FLDI.

ACS Style

Alec Houpt; Sergey Leonov. Cylindrical Focused Laser Differential Interferometer. AIAA Journal 2021, 59, 1142 -1150.

AMA Style

Alec Houpt, Sergey Leonov. Cylindrical Focused Laser Differential Interferometer. AIAA Journal. 2021; 59 (4):1142-1150.

Chicago/Turabian Style

Alec Houpt; Sergey Leonov. 2021. "Cylindrical Focused Laser Differential Interferometer." AIAA Journal 59, no. 4: 1142-1150.

Journal article
Published: 11 February 2021 in Experimental Thermal and Fluid Science
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This paper considers the modes of plasma-stabilized supersonic combustion in a cavity-based flameholding configuration. The testing was performed in the SBR-50 supersonic facility at the University of Notre Dame under the following conditions: Mach number M = 2, stagnation pressure and temperature P0 = 1–3.2 bar, T0 = 295–750 K, and an ethylene injection rate of ṁC2H4 = 0–8 g/s. A rail type electric discharge is employed in this work, which represents a modification of the previously explored quasi-DC (Q-DC) configuration. Two principally different cases are realized and described in detail: in- or over-the-cavity combustion, and bulk combustion characterized by a significant increase of pressure downstream of the fuel injection ports. Rail discharge performance is compared to the performance of Plasma-Injection Modules (PIMs) using a 1D analysis. Dimensionless analysis of the plasma-assisted combustor performance indicates reasonable agreement of the in-cavity combustion mode with the Ozawa stability diagram, while the plasma-assisted bulk combustion is essentially distinct from this formalism.

ACS Style

Sergey B. Leonov; Skye Elliott; Campbell Carter; Alec Houpt; Philip Lax; Timothy Ombrello. Modes of plasma-stabilized combustion in cavity-based M = 2 configuration. Experimental Thermal and Fluid Science 2021, 124, 110355 .

AMA Style

Sergey B. Leonov, Skye Elliott, Campbell Carter, Alec Houpt, Philip Lax, Timothy Ombrello. Modes of plasma-stabilized combustion in cavity-based M = 2 configuration. Experimental Thermal and Fluid Science. 2021; 124 ():110355.

Chicago/Turabian Style

Sergey B. Leonov; Skye Elliott; Campbell Carter; Alec Houpt; Philip Lax; Timothy Ombrello. 2021. "Modes of plasma-stabilized combustion in cavity-based M = 2 configuration." Experimental Thermal and Fluid Science 124, no. : 110355.

Editorial
Published: 20 July 2020 in Journal of Physics D: Applied Physics
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ACS Style

Sergey B Leonov; Svetlana Starikovskaya; Timothy Ombrello; Mark A Cappelli. Editorial conclusions to the special issue on electrical discharges for aerospace applications. Journal of Physics D: Applied Physics 2020, 53, 410201 .

AMA Style

Sergey B Leonov, Svetlana Starikovskaya, Timothy Ombrello, Mark A Cappelli. Editorial conclusions to the special issue on electrical discharges for aerospace applications. Journal of Physics D: Applied Physics. 2020; 53 (41):410201.

Chicago/Turabian Style

Sergey B Leonov; Svetlana Starikovskaya; Timothy Ombrello; Mark A Cappelli. 2020. "Editorial conclusions to the special issue on electrical discharges for aerospace applications." Journal of Physics D: Applied Physics 53, no. 41: 410201.

Accepted manuscript
Published: 16 June 2020 in Journal of Physics D: Applied Physics
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The arc discharge in magnetic field is one of the promising methods to intensify the kinematic transport in various systems. In this work, a detailed study of the flow arising in ambient air during the movement of a pulsed arc in external magnetic field was done. The study was performed using PIV and shadow flow visualization in parallel with the numerical modeling in a 2D MHD approach. The flow evolution during the electric current pulse was analyzed based on the vorticity generation equation. The flow relaxation after the current termination is considered, indicating a significant reduction of the gas velocity after the current termination due to rarefaction waves propagation. The typical flow structure remaining after the MHD interaction is a toroidal vortex with velocity magnitude up to 0.4 of the maximum arc movement velocity during the pulse.

ACS Style

Ivan Moralev; Pavel Kazanskii; Valentin A Bityurin; Aleksey Bocharov; Alexander A Firsov; Eugenii Dolgov; Sergey Leonov; Pavel Kazansky. Gas dynamics of the pulsed electric arc in the transversal magnetic field. Journal of Physics D: Applied Physics 2020, 53, 425203 .

AMA Style

Ivan Moralev, Pavel Kazanskii, Valentin A Bityurin, Aleksey Bocharov, Alexander A Firsov, Eugenii Dolgov, Sergey Leonov, Pavel Kazansky. Gas dynamics of the pulsed electric arc in the transversal magnetic field. Journal of Physics D: Applied Physics. 2020; 53 (42):425203.

Chicago/Turabian Style

Ivan Moralev; Pavel Kazanskii; Valentin A Bityurin; Aleksey Bocharov; Alexander A Firsov; Eugenii Dolgov; Sergey Leonov; Pavel Kazansky. 2020. "Gas dynamics of the pulsed electric arc in the transversal magnetic field." Journal of Physics D: Applied Physics 53, no. 42: 425203.

Accepted manuscript
Published: 12 June 2020 in Plasma Sources Science and Technology
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The subject of this paper is a constricted electric discharge, generated over a mixing layer of ethylene (as a generic fuel) and carbon dioxide (as a product of combustion) directly injected into a supersonic airflow. The discharge location and plasma parameters are characterized based on optical spectral analysis, fast camera observation, and electrical probe measurements. It is shown that the discharge mostly locates within a zone of gas composition relevant to the mixing layer and drifts toward the core airflow in the case of carbon dioxide or stay in the area rich by secondary gas in the case of ethylene injection. The analysis of the experimental data demonstrates that the discharge behaviour is determined by the balance of thermal dissociation, dissociative thermal conduction and nonequilibrium ionization.

ACS Style

Alexander Efimov; Alexander A Firsov; Nikita S. Kolosov; Sergey Leonov. Characterization of electric discharge collocated with gas jet in supersonic airflow. Plasma Sources Science and Technology 2020, 29, 07LT01 .

AMA Style

Alexander Efimov, Alexander A Firsov, Nikita S. Kolosov, Sergey Leonov. Characterization of electric discharge collocated with gas jet in supersonic airflow. Plasma Sources Science and Technology. 2020; 29 (7):07LT01.

Chicago/Turabian Style

Alexander Efimov; Alexander A Firsov; Nikita S. Kolosov; Sergey Leonov. 2020. "Characterization of electric discharge collocated with gas jet in supersonic airflow." Plasma Sources Science and Technology 29, no. 7: 07LT01.

Journal article
Published: 13 August 2019 in Journal of Physics D: Applied Physics
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ACS Style

Yasumasa Watanabe; Skye Elliott; Alexander Firsov; Alec Houpt; Sergey Leonov. Rapid control of force/momentum on a model ramp by quasi-DC plasma. Journal of Physics D: Applied Physics 2019, 52, 444003 .

AMA Style

Yasumasa Watanabe, Skye Elliott, Alexander Firsov, Alec Houpt, Sergey Leonov. Rapid control of force/momentum on a model ramp by quasi-DC plasma. Journal of Physics D: Applied Physics. 2019; 52 (44):444003.

Chicago/Turabian Style

Yasumasa Watanabe; Skye Elliott; Alexander Firsov; Alec Houpt; Sergey Leonov. 2019. "Rapid control of force/momentum on a model ramp by quasi-DC plasma." Journal of Physics D: Applied Physics 52, no. 44: 444003.

Journal article
Published: 13 June 2019 in Journal of Physics D: Applied Physics
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ACS Style

Tatsunori Hayashi; Alec W Houpt; Sergey B Leonov; Hirotaka Sakaue. Motion-capturing pressure-sensitive paint method under transient illumination by plasma source. Journal of Physics D: Applied Physics 2019, 52, 324005 .

AMA Style

Tatsunori Hayashi, Alec W Houpt, Sergey B Leonov, Hirotaka Sakaue. Motion-capturing pressure-sensitive paint method under transient illumination by plasma source. Journal of Physics D: Applied Physics. 2019; 52 (32):324005.

Chicago/Turabian Style

Tatsunori Hayashi; Alec W Houpt; Sergey B Leonov; Hirotaka Sakaue. 2019. "Motion-capturing pressure-sensitive paint method under transient illumination by plasma source." Journal of Physics D: Applied Physics 52, no. 32: 324005.

Journal article
Published: 12 March 2019 in Aerospace
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This study considers the effect of an electric discharge on the flow structure near a 19.4° compression ramp in Mach-2 supersonic flow. The experiments were conducted in the supersonic wind tunnel SBR-50 at the University of Notre Dame. The stagnation temperature and pressure were varied in a range of 294–600 K and 1–3 bar, respectively, to attain various Reynolds numbers ranging from 5.3 × 105 to 3.4 × 106 based on the distance between the exit of the Mach-2 nozzle and the leading edge of the ramp. Surface pressure measurements, schlieren visualization, discharge voltage and current measurements, and plasma imaging with a high-speed camera were used to evaluate the plasma control authority on the ramp pressure distribution. The plasma being generated in front of the compression ramp shifted the shock position from the ramp corner to the electrode location, forming a flow separation zone ahead of the ramp. It was found that the pressure on the compression surface reduced almost linearly with the plasma power. The ratio of pressure change to flow stagnation pressure was also an increasing function of the ratio of plasma power to enthalpy flux, indicating that the task-related plasma control effectiveness ranged from 17.5 to 25.

ACS Style

Yasumasa Watanabe; Alec Houpt; Sergey B. Leonov. Plasma-Assisted Control of Supersonic Flow over a Compression Ramp. Aerospace 2019, 6, 35 .

AMA Style

Yasumasa Watanabe, Alec Houpt, Sergey B. Leonov. Plasma-Assisted Control of Supersonic Flow over a Compression Ramp. Aerospace. 2019; 6 (3):35.

Chicago/Turabian Style

Yasumasa Watanabe; Alec Houpt; Sergey B. Leonov. 2019. "Plasma-Assisted Control of Supersonic Flow over a Compression Ramp." Aerospace 6, no. 3: 35.

Conference paper
Published: 19 November 2018 in Journal of Physics: Conference Series
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This paper describes the results of experimental study of stripwise near-surface plasma effect on oblique shock wave (SW) reflection from a solid wall in a M = 2 duct-driven shock-dominated airflow. Methods applied include schlieren visualization, plasma characterization with electric probes and optical emission spectroscopy, wall pressure measurements along the test section. The transient filamentary plasma is generated by means of a Quasi-DC electric discharge between flush mounted surface electrodes in a spanwise array. Test arrangement includes a shock wave (SW) generator installed on the bottom wall of the test section and the plasma generator installed on the upper wall. The SW generated from the bottom wall impinges the significantly disturbed boundary layer (BL) generated by the plasma array. The effect of reflected SW mitigation is demonstrated due to the interaction with the plasma-modified BL. The model of interaction is discussed and supported by the results of numerical simulation.

ACS Style

S B Leonov; A A Firsov; A W Houpt. Suppression of reflected oblique shock wave by multi-filamentary plasma. Journal of Physics: Conference Series 2018, 1112, 012005 .

AMA Style

S B Leonov, A A Firsov, A W Houpt. Suppression of reflected oblique shock wave by multi-filamentary plasma. Journal of Physics: Conference Series. 2018; 1112 (1):012005.

Chicago/Turabian Style

S B Leonov; A A Firsov; A W Houpt. 2018. "Suppression of reflected oblique shock wave by multi-filamentary plasma." Journal of Physics: Conference Series 1112, no. 1: 012005.

Conference paper
Published: 19 November 2018 in Journal of Physics: Conference Series
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The plasma-assisted combustion is considered as a prospective approach for ignition of a hydrocarbon fuel and flameholding in a supersonic airflow. Stable flameholding of gaseous and liquid hydrocarbon fuel was achieved by means of surface Q-DC discharge without employing mechanical flameholders in a supersonic combustion chamber. However, a high level of electric power, typically required to realize this method, may limit its application in a real apparatus. The current experimental and computational efforts continue the study of a distributed plasma system with the aim of reduction the total energy consumption and extending the life cycle of the electrode system. In the work described in this paper, the interaction of two separated plasma modules was investigated. The fuel ignition caused by individually controlled plasma modules was explored showing a significant effect of the plasma filament length on ignition efficiency.

ACS Style

A A Firsov; Evgeniy Dolgov; S B Leonov. Effect of DC-discharge geometry on ignition efficiency in supersonic flow. Journal of Physics: Conference Series 2018, 1112, 012011 .

AMA Style

A A Firsov, Evgeniy Dolgov, S B Leonov. Effect of DC-discharge geometry on ignition efficiency in supersonic flow. Journal of Physics: Conference Series. 2018; 1112 (1):012011.

Chicago/Turabian Style

A A Firsov; Evgeniy Dolgov; S B Leonov. 2018. "Effect of DC-discharge geometry on ignition efficiency in supersonic flow." Journal of Physics: Conference Series 1112, no. 1: 012011.

Review
Published: 02 July 2018 in Energies
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This manuscript reviews published works related to plasma assistance in supersonic combustion; focusing on mixing enhancement, ignition and flameholding. A special attention is paid for studies, which the author participated in person. The Introduction discusses general trends in plasma-assisted combustion and, specifically, work involving supersonic conditions. In Section 2, the emphasis is placed on different approaches to plasma application for fuel ignition and flame stabilization. Several schemes of plasma-based actuators for supersonic combustion have been tested for flameholding purposes at flow conditions where self-ignition of the fuel/air mixture is not realizable due to low air temperatures. Comparing schemes indicates an obvious benefit of plasma generation in-situ, in the mixing layer of air and fuel. In Section 3, the problem of mixing enhancement using a plasma-based technique is considered. The mechanisms of interaction are discussed from the viewpoint of triggering gasdynamic instabilities promoting the kinematic stretching of the fuel-air interface. Section 4 is related to the description of transitional processes and combustion instabilities observed in plasma-assisted high-speed combustion. The dynamics of ignition and flame extinction are explored. It is shown that the characteristic time for reignition can be as short as 10 ms. Two types of flame instability were described which are related to the evolution of a separation zone and thermoacoustic oscillations, with characteristic times 10 ms and 1 ms correspondingly.

ACS Style

Sergey B. Leonov. Electrically Driven Supersonic Combustion. Energies 2018, 11, 1733 .

AMA Style

Sergey B. Leonov. Electrically Driven Supersonic Combustion. Energies. 2018; 11 (7):1733.

Chicago/Turabian Style

Sergey B. Leonov. 2018. "Electrically Driven Supersonic Combustion." Energies 11, no. 7: 1733.

Proceedings article
Published: 07 January 2018 in 2018 AIAA Aerospace Sciences Meeting
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ACS Style

Alexander A. Firsov; Evgeniy Dolgov; Ruslan Rakhimov; Michail Shurupov; Sergey B. Leonov. Mixing enhancement by electrical discharge in supersonic airflow. 2018 AIAA Aerospace Sciences Meeting 2018, 1 .

AMA Style

Alexander A. Firsov, Evgeniy Dolgov, Ruslan Rakhimov, Michail Shurupov, Sergey B. Leonov. Mixing enhancement by electrical discharge in supersonic airflow. 2018 AIAA Aerospace Sciences Meeting. 2018; ():1.

Chicago/Turabian Style

Alexander A. Firsov; Evgeniy Dolgov; Ruslan Rakhimov; Michail Shurupov; Sergey B. Leonov. 2018. "Mixing enhancement by electrical discharge in supersonic airflow." 2018 AIAA Aerospace Sciences Meeting , no. : 1.

Proceedings article
Published: 07 January 2018 in 2018 AIAA Aerospace Sciences Meeting
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ACS Style

Alexander A. Firsov; Ivan Moralev; Yuriy Isaenkov; Sergey B. Leonov; Vitaly Soudakov. Suppression of transonic buffet phenomenon by spark plasma actuator. 2018 AIAA Aerospace Sciences Meeting 2018, 1 .

AMA Style

Alexander A. Firsov, Ivan Moralev, Yuriy Isaenkov, Sergey B. Leonov, Vitaly Soudakov. Suppression of transonic buffet phenomenon by spark plasma actuator. 2018 AIAA Aerospace Sciences Meeting. 2018; ():1.

Chicago/Turabian Style

Alexander A. Firsov; Ivan Moralev; Yuriy Isaenkov; Sergey B. Leonov; Vitaly Soudakov. 2018. "Suppression of transonic buffet phenomenon by spark plasma actuator." 2018 AIAA Aerospace Sciences Meeting , no. : 1.

Research article
Published: 18 March 2017 in Experiments in Fluids
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A Quasi-DC (Q-DC) electrical discharge generates a highly transient filamentary plasma in high-speed airflow. Major specific properties of this type of discharge are realized due to a strong coupling of the plasma to the moving gas. The plasma, supplied by a DC voltage waveform, demonstrates a pulsed-periodic pattern of dynamics significantly affecting the flow structure. In this study, the dynamics and plasma parameters of the Q-DC discharge are analyzed in the Supersonic Test Rig (SBR-50) at the University of Notre Dame at Mach number M = 2, stagnation pressure P0 = (0.9–2.6) × 105 Pa, stagnation temperature T0 = 300 K, unit Reynolds number ReL = 7–25 × 106 m−1, and plasma power Wpl = 3–21 kW. The plasma parameters are measured with current–voltage probes and optical emission spectroscopy. An unsteady pattern of interaction is depicted by high-speed image capturing. The result of the plasma-flow interaction is characterized by means of pressure measurements and schlieren visualization. It is considered that the Q-DC discharge may be employed for active control of duct-driven flows, cavity-based flow, and for effective control of shock wave–boundary layer interaction.

ACS Style

Alec Houpt; Brock Hedlund; Sergey Leonov; Timothy Ombrello; Campbell Carter. Quasi-DC electrical discharge characterization in a supersonic flow. Experiments in Fluids 2017, 58, 25 .

AMA Style

Alec Houpt, Brock Hedlund, Sergey Leonov, Timothy Ombrello, Campbell Carter. Quasi-DC electrical discharge characterization in a supersonic flow. Experiments in Fluids. 2017; 58 (4):25.

Chicago/Turabian Style

Alec Houpt; Brock Hedlund; Sergey Leonov; Timothy Ombrello; Campbell Carter. 2017. "Quasi-DC electrical discharge characterization in a supersonic flow." Experiments in Fluids 58, no. 4: 25.

Conference paper
Published: 05 January 2017 in 55th AIAA Aerospace Sciences Meeting
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ACS Style

Alexander A. Firsov; Yuriy Isaenkov; Ivan Moralev; Sergey B. Leonov; Vitaly Soudakov. Diminution of transonic buffet phenomenon by plasma actuators. 55th AIAA Aerospace Sciences Meeting 2017, 1 .

AMA Style

Alexander A. Firsov, Yuriy Isaenkov, Ivan Moralev, Sergey B. Leonov, Vitaly Soudakov. Diminution of transonic buffet phenomenon by plasma actuators. 55th AIAA Aerospace Sciences Meeting. 2017; ():1.

Chicago/Turabian Style

Alexander A. Firsov; Yuriy Isaenkov; Ivan Moralev; Sergey B. Leonov; Vitaly Soudakov. 2017. "Diminution of transonic buffet phenomenon by plasma actuators." 55th AIAA Aerospace Sciences Meeting , no. : 1.

Topical review
Published: 14 November 2016 in Plasma Sources Science and Technology
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The main focus of the review is on dynamics and kinetics of near-surface discharge plasmas, such as surface dielectric barrier discharges sustained by AC and repetitively pulsed waveforms, pulsed DC discharges, and quasi-DC discharges, generated in quiescent air and in the airflow. A number of technical issues related to plasma flow control applications are discussed in detail, including discharge development via surface ionization waves, charge transport and accumulation on dielectric surface, discharge contraction, different types of flow perturbations generated by surface discharges, and effect of high-speed flow on discharge dynamics. In the first part of the manuscript, plasma morphology and results of electrical and optical emission spectroscopy measurements are discussed. Particular attention is paid to dynamics of surface charge accumulation and dissipation, both in diffuse discharges and during development of ionization instabilities resulting in discharge contraction. Contraction leads to significant increase of both the surface area of charge accumulation and the energy coupled to the plasma. The use of alternating polarity pulse waveforms accelerates contraction of surface dielectric barrier discharges and formation of filamentary plasmas. The second part discusses the interaction of discharge plasmas with quiescent air and the external airflow. Four major types of flow perturbations have been identified: (1) low-speed near-surface jets generated by electrohydrodynamic interaction (ion wind); (2) spanwise and streamwise vortices formed by both electrohydrodynamic and thermal effects; (3) weak shock waves produced by rapid heating in pulsed discharges on sub-microsecond time scale; and (4) near-surface localized stochastic perturbations, on sub-millisecond time, detected only recently. The mechanism of plasma-flow interaction remains not fully understood, especially in filamentary surface dielectric barrier discharges. Localized quasi-DC surface discharges sustained in a high-speed flow are discussed in the third part of the review. Although dynamics of this type of the discharge is highly transient, due to its strong interaction with the flow, the resultant flow structure is stationary, including the oblique shock and the flow separation region downstream of the discharge. The oblique shock is attached to a time-averaged, wedge-shaped, near-wall plasma layer, with the shock angle controlled by the discharge power, which makes possible changing the flow structure and parameters in a controlled way. Finally, unresolved and open-ended issues are discussed in the summary.

ACS Style

Sergey B Leonov; Igor Adamovich; Victor R Soloviev. Dynamics of near-surface electric discharges and mechanisms of their interaction with the airflow. Plasma Sources Science and Technology 2016, 25, 063001 .

AMA Style

Sergey B Leonov, Igor Adamovich, Victor R Soloviev. Dynamics of near-surface electric discharges and mechanisms of their interaction with the airflow. Plasma Sources Science and Technology. 2016; 25 (6):063001.

Chicago/Turabian Style

Sergey B Leonov; Igor Adamovich; Victor R Soloviev. 2016. "Dynamics of near-surface electric discharges and mechanisms of their interaction with the airflow." Plasma Sources Science and Technology 25, no. 6: 063001.

Journal article
Published: 13 August 2015 in Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
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The results of experimental study of plasma-based mixing, ignition and flameholding in a supersonic model combustor are presented in the paper. The model combustor has a length of 600 mm and cross section of 72 mm width and 60 mm height. The fuel is directly injected into supersonic airflow (Mach number M =2, static pressure P st =160–250 Torr) through wall orifices. Two series of tests are focused on flameholding and mixing correspondingly. In the first series, the near-surface quasi-DC electrical discharge is generated by flush-mounted electrodes at electrical power deposition of W pl =3–24 kW. The scope includes parametric study of ignition and flame front dynamics, and comparison of three schemes of plasma generation: the first and the second layouts examine the location of plasma generators upstream and downstream from the fuel injectors. The third pattern follows a novel approach of combined mixing/ignition technique, where the electrical discharge distributes along the fuel jet. The last pattern demonstrates a significant advantage in terms of flameholding limit. In the second series of tests, a long discharge of submicrosecond duration is generated across the flow and along the fuel jet. A gasdynamic instability of thermal cavity developed after a deposition of high-power density in a thin plasma filament promotes the air–fuel mixing. The technique studied in this work has weighty potential for high-speed combustion applications, including cold start/restart of scramjet engines and support of transition regime in dual-mode scramjet and at off-design operation.

ACS Style

Aleksandr Firsov; Konstantin V. Savelkin; Dmitry A. Yarantsev; Sergey B. Leonov. Plasma-enhanced mixing and flameholding in supersonic flow. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 2015, 373, 20140337 .

AMA Style

Aleksandr Firsov, Konstantin V. Savelkin, Dmitry A. Yarantsev, Sergey B. Leonov. Plasma-enhanced mixing and flameholding in supersonic flow. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2015; 373 (2048):20140337.

Chicago/Turabian Style

Aleksandr Firsov; Konstantin V. Savelkin; Dmitry A. Yarantsev; Sergey B. Leonov. 2015. "Plasma-enhanced mixing and flameholding in supersonic flow." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2048: 20140337.

Journal article
Published: 17 December 2010 in IEEE Transactions on Plasma Science
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The results of laboratory-scale experiments on plasma-induced hydrogen and ethylene ignition and flameholding by means of near-surface electrical discharge are presented. The ignition and flameholding were demonstrated for direct fuel injection into the supersonic air. A two-zone model of plasma-induced ignition is proposed to explain the experimental data. Numerical simulations were performed to confirm the two-zone model of plasma-assisted ignition.

ACS Style

Sergey B. Leonov; Igor V. Kochetov; Anatoly P. Napartovich; Vladimir A. Sabel'Nikov; Dmitry A. Yarantsev. Plasma-Induced Ethylene Ignition and Flameholding in Confined Supersonic Air Flow at Low Temperatures. IEEE Transactions on Plasma Science 2010, 39, 781 -787.

AMA Style

Sergey B. Leonov, Igor V. Kochetov, Anatoly P. Napartovich, Vladimir A. Sabel'Nikov, Dmitry A. Yarantsev. Plasma-Induced Ethylene Ignition and Flameholding in Confined Supersonic Air Flow at Low Temperatures. IEEE Transactions on Plasma Science. 2010; 39 (2):781-787.

Chicago/Turabian Style

Sergey B. Leonov; Igor V. Kochetov; Anatoly P. Napartovich; Vladimir A. Sabel'Nikov; Dmitry A. Yarantsev. 2010. "Plasma-Induced Ethylene Ignition and Flameholding in Confined Supersonic Air Flow at Low Temperatures." IEEE Transactions on Plasma Science 39, no. 2: 781-787.

Journal article
Published: 01 November 2008 in Journal of Propulsion and Power
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ACS Style

Sergey B. Leonov; Dmitry A. Yarantsev. Near-Surface Electrical Discharge in Supersonic Airflow: Properties and Flow Control. Journal of Propulsion and Power 2008, 24, 1168 -1181.

AMA Style

Sergey B. Leonov, Dmitry A. Yarantsev. Near-Surface Electrical Discharge in Supersonic Airflow: Properties and Flow Control. Journal of Propulsion and Power. 2008; 24 (6):1168-1181.

Chicago/Turabian Style

Sergey B. Leonov; Dmitry A. Yarantsev. 2008. "Near-Surface Electrical Discharge in Supersonic Airflow: Properties and Flow Control." Journal of Propulsion and Power 24, no. 6: 1168-1181.

Journal article
Published: 12 August 2008 in IEEE Transactions on Plasma Science
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The pulse filamentary electrical discharge in atmospheric air heats the gas that leads to generation of postdischarge expanding thermal cavity. The dynamics of its unstable swelling is a subject of this paper.

ACS Style

Sergey B. Leonov; Dmitry A. Yarantsev. Instability in Postdischarge Thermal Cavity. IEEE Transactions on Plasma Science 2008, 36, 978 -979.

AMA Style

Sergey B. Leonov, Dmitry A. Yarantsev. Instability in Postdischarge Thermal Cavity. IEEE Transactions on Plasma Science. 2008; 36 (4):978-979.

Chicago/Turabian Style

Sergey B. Leonov; Dmitry A. Yarantsev. 2008. "Instability in Postdischarge Thermal Cavity." IEEE Transactions on Plasma Science 36, no. 4: 978-979.