A simulator is designed to explore the interactive mechanism of plasma jet with the liquid medium in the bulk-loaded liquid electrothermal chemical launching process. The properties of the plasma jet expanding in the liquid and the mixing characteristics of the plasma jet with liquid in the cylindrical chamber are studied using a high speed camera system. According to the experimental results, a two-dimensional axisymmetric unsteady compressible flow model has been proposed. The results indicate that, during the expansion of the plasma jet in the liquid medium, there is relatively strong turbulent mixing. The higher the discharge voltage is, the stronger the Helmholtz instability effect will be. The Taylor cavity forming during the jet expansion can be divided into three regions: the main flow region, the compression region and the backflow vortex region. The calculated axial expansion displacement of Taylor cavity coincides well with the test one.
展开▼
