Detection of Pressure Waves Emitted From Plasma Jets With Fibered Optical Wave Microphone in Gas and Liquid Phases

Mitsugi, Fumiaki; Kusumegi, Shota; Kawasaki, Toshiyuki; Nakamiya, Toshiyuki; Sonoda, Yoshimi

doi:10.1109/tps.2016.2585659

Cited by 16 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Later, a turbulent front propagated downstream with a velocity comparable with the gas flow's, as already observed in similar conditions in previous work [1]. Since the total expansion of the turbulent front was sufficiently fast enough to observe a re-established laminar He flow before the ignition of the next discharge event, we can confirm that the turbulent front phenomenon is directly associated with a combination of plasma-induced pressure waves and local electrode heating [1,24,25]. Moreover, because the Schlieren images ( Figure 5) clearly showed that the magnitude of the turbulent structures varied between the investigated cases, we can hypothesize that turbulent front formation and its propagation is affected by the target characteristics.…”

Section: Discussionsupporting

confidence: 87%

Experimental Investigation on the Influence of Target Physical Properties on an Impinging Plasma Jet

Simoncelli

Stancampiano

Boselli

et al. 2019

Plasma

View full text Add to dashboard Cite

The present work aims to investigate the interaction between a plasma jet and targets with different physical properties. Electrical, morphological and fluid-dynamic characterizations were performed on a plasma jet impinging on metal, dielectric and liquid substrates by means of Intensified Charge-Coupled Device (ICCD) and high-speed Schlieren imaging techniques. The results highlight how the light emission of the discharge, its time behavior and morphology, and the plasma-induced turbulence in the flow are affected by the nature of the target. Surprisingly, the liquid target induces the formation of turbulent fronts in the gas flow similar to the metal target, although the dissipated power in the former case is lower than in the latter. On the other hand, the propagation velocity of the turbulent front is independent of the target nature and it is affected only by the working gas flow rate.

show abstract

Section: Discussionsupporting

confidence: 87%

Experimental Investigation on the Influence of Target Physical Properties on an Impinging Plasma Jet

Simoncelli

Stancampiano

Boselli

et al. 2019

Plasma

View full text Add to dashboard Cite

show abstract

“…Mitsugi et al [16] reported on the possible role of plasmainduced pressure waves as a possible cause of this ROS fast flow but only for small gas flow rate (<1 slm) as for higher flow the stream was not detected although the intensity of pressure waves increased. Always the same group observed the same phenomenon through PIV technique confirming the short duration of this fast flow.…”

Section: Introductionmentioning

confidence: 99%

Evidence, origin and impact of liquid flows in plasma medicine in vitro treatments with APPJs

Stancampiano

Bocanegra

Dozias

et al. 2021

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

“…42,43) We further need to consider the physical and electrical effects on the downward flow together with the chemical reactions. Other effects, such as electrical field by local charge accumulation, 19,44) momentum transfer of particles, 20,45,46) pressure waves, 47,48) and their multiple effects, should be studied to enhance the understanding of the downward flows in view of the effects caused by O 2 addition.…”

Section: Resultsmentioning

confidence: 99%

Effects of surrounding gas on plasma-induced downward liquid flow

Kawasaki¹,

Nishida²,

Uchida³

et al. 2020

Jpn. J. Appl. Phys.

Self Cite

View full text Add to dashboard Cite

Understanding the mechanisms behind plasma-induced liquid flow is important for the transport of reactive species in liquid. In this study, we studied the effects of the surrounding gas compositions of a plasma-jet on the plasma-induced downward liquid flow using particle image velocimetry. Nitrogen (N 2 ) and oxygen (O 2 ) mixtures in different mixing ratios were supplied as surrounding gas around a helium (He) plasma jet at a constant flow rate. The results clearly indicated that O 2 in the surrounding gas plays a key role in enhancing the downward flow. Increasing the O 2 concentration increased the downward flow in the depth direction. An emission spectroscopy analysis suggested that reactive species related to excited atomic O were considered to be important for inducing downward flows. The relationship between the downward flows and oxidation reactions on a liquid target were discussed to determine the reasons responsible for the driving forces.

show abstract

Detection of Pressure Waves Emitted From Plasma Jets With Fibered Optical Wave Microphone in Gas and Liquid Phases

Cited by 16 publications

References 39 publications

Experimental Investigation on the Influence of Target Physical Properties on an Impinging Plasma Jet

Experimental Investigation on the Influence of Target Physical Properties on an Impinging Plasma Jet

Evidence, origin and impact of liquid flows in plasma medicine in vitro treatments with APPJs

Effects of surrounding gas on plasma-induced downward liquid flow

Contact Info

Product

Resources

About