Numerical Analyses of 2-Dimensional Axisymmetric MHD Flows Satisfying Sonic Conditions in an MPD Thruster

摘要

Numerical study of MHD supersonic flows is important to estimate the thrust performance. We already developed the codes taking account of the sonic conditions of 1-dimensional flow analysis, where a 2-dimensional flow was handled, assuming a fully-ionized plasma. Here, for the purpose of analyzing more realistic flows, the code is extended to allow ionization and recombination processes and to introduce a 2-temperature model in 2-dimensional axisymmetric MHD flows. Using the geometric parameters close to the existing experiments, we have calculated 2-dimensional axisymmetric flows satisfying the inlet sonic condition. As a result, the steady flowfields are obtained.