查詢結果分析
相關文獻
- 動態四面體/稜鏡型網格之建立
- High Quality Adaptive Mesh Generation for 3-Dimensional Metal Forming Simulation
- 類蜻蜓翼型拍翼式微飛行器之數值分析與實驗驗證
- 飛彈發射箱內點火超壓之數值研究
- 應用動態網格方法於氣動穩定平臺概念設計與分析
- 週期性擺動之送風葉片對室內空間氣流分佈的影響
- 低雷諾數下拍撲翼飛行特性之數值研究
- Wave-maker Stroke Design and Wave-decay Methods in Numerical Wave Tank Study
- 門關閉引致空化的流場計算分析
- 以重疊式動態網格進行三維動態流場模擬之數值法建立
頁籤選單縮合
| 題 名 | 動態四面體/稜鏡型網格之建立=Generation of Dynamic Tetrahedral/Prismatic Meshes |
|---|---|
| 作 者 | 賴建文; 黃啟鐘; | 書刊名 | 航空太空及民航學刊. 系列B |
| 卷 期 | 42:2 2010.10[民99.10] |
| 頁 次 | 頁89-96 |
| 分類號 | 447.55 |
| 關鍵詞 | 動態網格; 四面體/稜鏡型網格; Dynamic mesh; Tetrahedral/prismatic mesh; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 在航空發展史上,建立多功能之多元化飛行器一直是人類之目標。除了現有固定翼飛行器外,振翅機一直吸引人們的注意力。爲完成振翅機之研究,利用計算流體力學方法探討流場與空氣動力行爲是目前重要之工作。爲達到上述目的,網格之建立是必需的。本文採用CATIA電腦輔助設計軟體提供所需之幾何外型,並在表面建立非結構性三角形網格以形成邊界網格。最後利用劉和黃所發展之網格建立法,在整個流場區域中建立非結構性四面體網格。由於非結構四面體網格較難有效處理邊界層與紊流問題,因此在翼表面附近建立稜鏡型網格而其他區域以四面體分割。爲完成動態四面體/稜鏡型網格系統,本研究採用剛體-可變形動態格點演算法處理格點位移。對於振翅翼拍撲/扭轉運動,本文已能成功地模擬運動行爲及其網格分佈。 |
| 英文摘要 | During the history of aeronautic development, creating the versatile flight vehicle with multifunctional capabilities is always the goal of mankind. Besides the existing fixed-wing aircraft, the ornithopter is attracting the people's interest. To accomplish the study of ornithopter, the main work is to apply CFD to investigate the flow-field phenomena and aerodynamics. To achieve the foregoing goal, it is necessary to generate the mesh. The CAD software of CATIA is adopted in this paper to provide geometry, and the unstructured triangular meshes on surface of geometry is created to form the boundary meshes. Finally, the mesh generation method, which was developed by Liu and Hwang, is adopted to create the unstructured tetrahedral meshes in the whole flow domain. Because the unstructured tetrahedral meshes are difficult to efficiently treat the boundary-layer and turbulent flow problems, the prismatic meshes are created around the wing surface, and the other regions are divided into tetrahedrons. To achieve the dynamic tetrahedral/prismatic mesh system, the rigid-deformable dynamic mesh algorithm is used to handle the grid displacement in this study. The flapping/twisting motions and the related mesh distributions have been simulated successfully in this paper. |
本系統中英文摘要資訊取自各篇刊載內容。