音速流入条件を満たすMPD推進器内2次元軸対称電磁流体流れの数値解析

抄録

Numerical studies of MHD supersonic flow are important to estimate the performance of electric thrusters. Here, we have developed a code taking account of sonic-inlet conditions of 1-dimensional flow given by Lawless et al. For the purpose of analyzing a flow in a realistic geometry, the code allows ionization and recombination processes in a 2-dimensional axisymmetric MHD flow. By calculating 2-dimensional flows (i) satisfying the sonic-inlet conditions and (ii) having the geometry and parameters identical to the experiment, the steady flowfields generating an oblique shock wave are obtained. The shock wave is analyzed by the Rankine-Hugoniot relation having the effect of source terms in momentum and energy equations, confirming that the source terms could quantitatively explain the shock strength.