The shift in the laminar‐to‐turbulent transition flow mode in atmospheric pressure plasma jet

Abstract

AbstractNonthermal equilibrium atmospheric pressure plasma jet gained great interest due to its multidisciplinary applications. This work is focused on studying the characteristics of an argon atmospheric pressure plasma jet and the laminar‐to‐turbulent flow mode transition. By increasing the applied voltage from 10 to 25 kV, the plasma can run in four operational modes depending on the number of current pulses per half a cycle of the applied voltage. The plasma jet gas temperature increases from 310 to 370 K and the laminar‐to‐turbulent transition value shifts toward lower flow rate values from 3.75 to 2.6 slpm as a result of increasing the applied voltage. A clear border between the laminar and the turbulent regions has been resolved at different applied voltages and flow rates at a fixed applied frequency of 24 kHz.