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Plasma-induced flow instabilities in atmospheric pressure plasma jets

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4996192· OSTI ID:1535336
 [1];  [2];  [2]
  1. Univ. of Michigan, Ann Arbor, MI (United States); DOE/OSTI
  2. Univ. of Michigan, Ann Arbor, MI (United States)
Pulsed plasma excitation of rare gases flowing into air has been shown to impact the stability of the flow in non-equilibrium atmospheric pressure plasma jets (APPJs). In this paper, the results from a numerical modeling investigation of the stability of a round He APPJ with a powered electrode exposed to the gas flow are discussed. Localized gas heating at the powered electrode occurs on the time scale of the voltage pulse, tens to 100 ns, which is short compared to the fluid timescales. An acoustic wave propagates from this heated, expanding gas and exits the jet. The wave disturbs the shear layer between the He and surrounding humid air, exciting a shear instability which grows downstream with the flow and increases the mixing of the humid air into the He. The effects of the eddy-dominated flow on ionization wave (IW) propagation in an APPJ were investigated. The IW followed the regions of the highest helium concentration, resulting in an increased production of NO, HO2, and NO2.
Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
SC0014132
OSTI ID:
1535336
Alternate ID(s):
OSTI ID: 1619843
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 11 Vol. 111; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (18)

High-performance inertial impaction filters for particulate matter removal journal March 2018
Modelling the electric field in reactors yielding cold atmospheric–pressure plasma jets journal March 2020
Characterizing the dominant ions in low-temperature argon plasmas in the range of 1–800 Torr journal March 2018
Comparison of characteristics and downstream uniformity of linear-field and cross-field atmospheric pressure plasma jet array in He journal June 2018
Interaction of argon and helium plasma jets and jets arrays with account for gravity journal June 2018
Cold atmospheric helium plasma jet in humid air environment journal April 2019
Monitoring hydrodynamic effects in helium atmospheric pressure plasma jet by resonance broadening emission line journal July 2019
The effect of liquid target on a nonthermal plasma jet—imaging, electric fields, visualization of gas flow and optical emission spectroscopy journal January 2018
Effects of CF 4 content on particle densities and reaction pathways in atmospheric-pressure Ar/CF 4 pulsed dielectric barrier discharge plasma journal May 2018
Plasma kinetics in a nanosecond pulsed filamentary discharge sustained in Ar–H 2 O and H 2 O journal November 2018
Liquid dynamics in response to an impinging low-temperature plasma jet journal December 2018
Modelling of the transport phenomena for an atmospheric-pressure plasma jet in contact with liquid journal May 2019
How dielectric, metallic and liquid targets influence the evolution of electron properties in a pulsed He jet measured by Thomson and Raman scattering journal August 2018
Effect of plasma on gas flow and air concentration in the effluent of a pulsed cold atmospheric pressure helium plasma jet journal September 2018
Numerical simulation of capillary helium and helium−oxygen atmospheric pressure plasma jets: propagation dynamics and interaction with dielectric journal October 2018
Experimental investigation on the interaction of a nanopulsed plasma jet with a liquid target journal December 2018
Regularly-swelling plumes generated in atmospheric pressure argon plasma jet excited by a biased sinusoidal voltage journal May 2019
Generic residual charge based model for the interpretation of the electrohydrodynamic effects in cold atmospheric pressure plasmas journal May 2019

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