WJET  Vol.7 No.2 , May 2019
Expansion Characteristics of a Plasma Jet in the Stepped-Wall Chamber Filled with Water
ABSTRACT
The interaction mechanism between the plasma and liquid is a key problem for the electrothermal chemical launch technology. To investigate this problem, a simulated experiment for the expansion process of a plasma jet in the working fluid is carried on. Based on this experiment, a two-dimensional axisymmetric unsteady theoretical model is established to reveal the plasma-liquid interaction flow field pattern. The results show that a typical Taylor cavity forms as the plasma jet expands in liquid. The induction effect of the stepped-wall structure enhances the radial expansion of the plasma jet. An arc-shaped pressure wave is generated at the front of the plasma jet and then evolves into the plane wave. A high-pressure area forms at the head of the plasma jet and then moves downstream. There is a strong plasma-liquid turbulent mixing at the interface, especially near the steps and the nozzle exit area.
Cite this paper
Liu, Y. , Yu, Y. and Mang, S. (2019) Expansion Characteristics of a Plasma Jet in the Stepped-Wall Chamber Filled with Water. World Journal of Engineering and Technology, 7, 293-301. doi: 10.4236/wjet.2019.72020.
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