The formation of a turbulent front in a time modulated argon APPJ

S. Zhang, E.M. Veldhuizen, van, P.J. Bruggeman, A. Sobota

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Abstract

Cold atmospheric pressure plasma jets (APPJ) are promising tools for biomedical applications such as wound healing, disinfection, decontamination, and material processing. The jet effluent is blown in an open air environment which leads to air diffusion and argon-air mixtures in the effluent flow. Since the reactive species carried by the flow are important in such kinds of applications, knowledge of the characteristics of the flow are crucial for understanding the distribution, evolution, transport, and chemical reactions of these reactive species. The flow dynamics of an non equilibrium argon-based atmospheric pressure plasma jet (APPJ) is investigated in this work. Shadowgraphy results show that turbulent front appears when the plasma is switched on and off and the laminar length of the flow during the plasma on phase is shorter than that during the plasma off phase. Time resolved gas temperature profiles obtained by Rayleigh scattering are used to explain the formation of the turbulent front when the plasma is switched on and off and the reduction of the length of the laminar flow.
Original languageEnglish
Title of host publicationPresentation at the 67th Gaseous Electronics Conference, November 2–7, 2014; Raleigh, North Carolina
Place of PublicationNew York
PublisherAmerican Physical Society
Publication statusPublished - 2014
Event67th Annual Gaseous Electronics Conference, GEC2014, 2-7 November 2014, Raleigh, North Carolina, United States - Raleigh, United States
Duration: 2 Nov 20147 Nov 2014
http://www.aps.org/meetings/meeting.cfm?name=GEC14

Publication series

NameBulletin of the American Physical Society
Volume59
ISSN (Print)0003-0503

Conference

Conference67th Annual Gaseous Electronics Conference, GEC2014, 2-7 November 2014, Raleigh, North Carolina, United States
Abbreviated titleGEC2014
CountryUnited States
CityRaleigh
Period2/11/147/11/14
Other67th Gaseous ELectronics Conference (67th GEC)
Internet address

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    Zhang, S., Veldhuizen, van, E. M., Bruggeman, P. J., & Sobota, A. (2014). The formation of a turbulent front in a time modulated argon APPJ. In Presentation at the 67th Gaseous Electronics Conference, November 2–7, 2014; Raleigh, North Carolina (Bulletin of the American Physical Society; Vol. 59). American Physical Society.