Numerical modeling of an impinging and compressible dusted plasma jet controlled by a magnetic field

The present study has been conducted to clarify the magnetic control charac teristics of a particle-laden compressible plasma jet impinging on a substr ate for the improvement of a low-pressure plasma spraying process and its c ontrollable optimization. The plasma jet is described by an Eulerian approa ch and each injected particle is described by a Lagrangian approach, respec tively, taking into account the compressible effect, variable transport pro perties, and plasma-particle interactions, coupled with the Maxwell's equat ions. The effects of the location of an applied rf electromagnetic field an d of the injected particle size on the plasma jet characteristics and the p article behavior are clarified by numerical simulation. It is concluded tha t the particle dispersion is effectively influenced and, furthermore, the p lasma temperature and the particle temperature can be strongly controlled b y applying the rf electromagnetic field to the nozzle. The reasonable agree ment of particle velocity between calculation and experiment is obtained.