頁籤選單縮合
題 名 | A Regression Relation between Cavitation Number and Cavity Length for Two-Dimensional Supercavitating Hydrofoils=二維全空化水翼之空化係數與空泡長度迴歸關係研究 |
---|---|
作 者 | 陳建宏; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷 期 | 24:2 2000.03[民89.03] |
頁 次 | 頁120-129 |
分類號 | 444 |
關鍵詞 | 空化係數; 空泡長度; 迴歸關係; 二維全空化水翼流場; 2-D supercavitating hydrofoil; Potential flow; Regression relation; |
語 文 | 英文(English) |
英文摘要 | For convenience in engineering applications, we attempt to find a general regression relation between the nondimensional cavity length and the cavitation number for two-dimensional supercavitating hydrofoils. Based on observations of the general trend of the relation, a nonlinear function for these two physical quantities is proposed, and the coefficients in the function are optimally determined via a least- squares procedure and an iterative Gauss-Newton method. Several supercavitating hydrofoils, including flat-plate hydrofoils and hydrofoils with and without cambers, are investigated. The results seem to indicate that there exists a global approximate relation, the optimum coefficients of which depend on the flow conditions and hydrofoil shape. |
本系統中英文摘要資訊取自各篇刊載內容。