Abstract
In many applications of Magnetohydrodynamic (MHD) process, there is a great interest to consider MHD acceleration for advanced propulsion. The essential requirement for using this acceleration technique is that the propulsion system should have minimum weight, size, and complexity. In this paper, fundamental performance of a diagonal type MHD accelerator under chemical and thermal equilibrium conditions is described. The 1dimensional numerical simulation is performed to characterize acceleration along the specified channel which has been designed and developed by NASA Marshall Space Flight Center. In order to solve a set of differential MHD equations, MacCormack scheme is employed. In the present calculation, working gas of aero-plasma, consists of diatomic molecule of nitrogen, oxygen, and hydrogen, is considered in order to actualize application of MHD accelerator propulsion system. Numerical results show basic characteristic of gasdynamic, electrical properties, and electrical efficiency of MHD accelerator. Moreover, 3D analysis is newly carried out and comparison with 1-D analysis is performed. The almost equivalent result is obtained with special information on boundary layers and secondary flows.
Published Version
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