Atmospheric pressure plasma acoustic moment analysis
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|Title:||Atmospheric pressure plasma acoustic moment analysis||Authors:||Law, Victor J.
O'Neill, Feidhlim T.
Dowling, Denis P.
|Permanent link:||http://hdl.handle.net/10197/4786||Date:||2011||Abstract:||Low-order moment around the mean (mean, standard deviation and skewness) analysis of the time evolving specific acoustic intensity of an air atmospheric pressure plasma jet is performed as a function of nozzle-to-surface gap (0.5 to 7 cm), drive frequency (19, 22, and 25 kHz) and air flow rate (35.7 to 76.6 l/m). The probability distribution of each time-series dataset exhibits deterministic correlations with contrasting entropy process regions afterglow (blown arc process (gap = 0.5 cm and 1740 ±100 K); and gap = 1 to 7 cm and 300 to 400 K)). The results indicate that the heated air is channeled along the surface and has a preferred backscatter an ular. In addition the blown arc process exhibits a skewness of +0.055 and the afterglow has skewness values from -0.05 to -0.4. These results illustrate how acoustic information can be used to differentiate plasma-surface entropy states.||Funding Details:||Science Foundation Ireland||Type of material:||Conference Publication||Publisher:||American Institute of Physics||Copyright (published version):||2011 American Institute of Physics||Keywords:||Acoustic noise; Atmospheric plasma jet; Acoustic intensity||DOI:||10.1063/1.3637773||Language:||en||Status of Item:||Not peer reviewed||Conference Details:||NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2011: International Conference on Numerical Analysis and Applied Mathematics, 19–25 September 2011, Halkidiki, (Greece)|
|Appears in Collections:||Mechanical & Materials Engineering Research Collection|
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