Interaction Between a Spherical Particle and Atmospheric Pressure Currentless Argon Plasma

Abstract

The interaction between a spherical particle of radius 10−5 − 10−3 m and atmospheric pressure currentless argon plasma was studied numerically within the hydrodynamic approach. The nonlinear problem was solved taking into account the temperature dependencies of transport and kinetic coefficients. A two-temperature model, which considers plasma thermal and ionization non-equilibrium near the particle, was used. The boundary condition for electron heat flux on the outer boundary of the space charge sheath is discussed in detail. The spatial distributions of plasma characteristics, such as temperature and number density, near the particle were determined and analyzed. The heat flux from plasma to the particle was calculated over a wide temperature range of singly ionized argon plasma.

Keywords

• atmospheric pressure argon plasma
• currentless argon plasma
• plasma numerical modeling
• spherical particle in plasma
• plasma-particle interaction