JIEDI-1ツールの開発 : イオンエンジングリッド損耗評価コードの改良 (イオン加速グリッド耐久認定用数値解析 JIEDI(JAXA Ion Engine Development Initiatives) ツールの研究開発ワークショップ論文集)

概要

論文の詳細を見る
Improvements have been made to the grid erosion evaluation code (JIEDI-1) to achieve robust convergence and to enhance the accuracies of grid life estimations. The major improved features of the code are 1) the use of Newton-Raphson method and the ICCG solver, 2) modifications of the inlet boundary conditions, 3) incorporation of the differential sputtering yield and redeposition effect of the grid material, and 4) solution-adaptive mesh generation. The last feature is realized by the commercial mesh generation software "pro-STAR". Numerical code prediction of grid mass loss showed good agreement with that of μ10 ion engine life test, with robust convergence and improved simulation time by a factor of 3〜4 in comparison with the previous code.