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研究生： 崔春山
Chin-San Chuang
論文名稱： 中速震波穩定性之模擬研究
指導教授： 蔡偉雄
Wei-Hsiung Tsai
口試委員:
學位類別： 碩士
Master
系所名稱： 地球科學學院 - 太空科學研究所
Graduate Institute of Space Science
畢業學年度： 88
語文別： 中文
論文頁數： 83
中文關鍵詞： 中速震波 、磁性流體力學
外文關鍵詞： Intermediate Shock, Magnetohydrodynamic
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    • The problem of the existence of intermediate shock (IS), this is an unsolved problem based on the observed data and theoretical model. In this thesis, we focus on the stability of the IS using the plasma simulation study. First, We calculate the upstream parameters for different IS by theoretical model, then we created four kinds of IS. Secondary, we simulate and analyze the stability of each kind of the IS in MHD code. The results show that all modes of the IS are stable except of the mode IS 2-3. The last part is to study the stability of the IS in hybrid code. We found that only IS 1-3 can be stable. We must have advanced theoretical model and much more space observed data to help our research of

    摘要 圖目錄 表目錄 第一章 介紹 1 第二章 基本理論 3 2-1 MHD理論 2-1.1 磁性流體力學中的小擾動 2-1.2 大震幅擾動 5 2-1.2.a簡單波 2-1.2.b不連續結構 6 2-2 震波的穩定性之線性理論 10 第三章 基本方程式與數值模擬方法 12 3-1 MHD方程式 3-2 MHD守恆式 14 3-3 一維震波的躍遷條件 15 3-4 共平面定理與震波解 16 3-5 一維Resistive MHD數值模擬 19 3-5.1 無因次化 3-5.2 一維數值模擬 21 3-6 Hybird碼基本方程式及模擬 23 3-6.1 基本方程式 3-6.2 無因次化 26 第四章 中速震波穩定性之數值模擬 28 4-1 中速震波與上游三參數之關係 4-1.1 Case 1 29 4-1.2 Case 2 4-1.3 Case 3 30 4-1.4 Case 4 4-1.5 Case 5 4-1.6 綜合比較 31 4-2 中速震波穩定性之MHD模擬結果 4-2.1 Case A : IS 1-4 32 4-2.2 Case B : IS 1-3 4-2.3 Case C : IS 2-3 33 4-2.4 Case D : IS 2-4 34 4-2.5 小干擾對模擬的影響 35 4-3 中速震波穩定性之Hybrid code模擬結果 36 第五章 第五章 結論 38 5-1 中速震波三參數初始值討論 5-2 中速震波在兩種數值模擬碼的穩定性比較 附圖與附表 參考資料

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