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題 名 | 橢圓錐型乘波航器之數值研究=Simulation for Elliptic-Cone Waverider Including the Variations of Mach No. and Angle-Of-Attack |
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作 者 | 林顯群; 余政宏; 沈銘秋; | 書刊名 | 力學 |
卷 期 | 12:2 1996.06[民85.06] |
頁 次 | 頁255-266 |
分類號 | 447.55 |
關鍵詞 | 橢圓錐型乘波航器; 設計狀況; 非設計狀況; 具攻角; 數值模擬; Elliptic-cone waveriders; On-design condition; Off-design condition; Angle-of-attack; Numerical simulation; |
語 文 | 中文(Chinese) |
中文摘要 | 本數值研究以橢圓錐型乘波航器為對象(Elliptic-Cone Waverider; ECWR),針對 設計與非設計狀況流場做詳盡的模擬與氣動力特性計算;探討此型航器處於不同攻角及馬赫 數下之黏性流場,藉以補充以往文獻對此航器研究之不足。並將此結果和無黏性理論解與實 驗驗證,作一系列非設計狀況下的氣動力性能分析。結果顯示本研究計算氣動力與實驗驗證 相當符合,並藉由對流場分析與探討,將提供進氣道、控制平面設計與飛行操縱之考量。 |
英文摘要 | A comprehensive numerical study for the viscous laminar flowfields associated with the elliptic-cone waveriders is analyzed by means of the utilization of thin-layer approximation and Navier-Stokes equation together with the implicit two-factored flux-split scheme (TFS). Both the on-design and off-design cases of elliptic-cone waverider are examined and compared with the available results in literature. In the case of on-design condition, the results are compared with the previous experimental and analytical results; and they are found to be in reasonable agreement. Also, off-design conditions include offdesign Mach numbers, positive and negative angles of attack. These calculations show the aerodynamic characteristics are declined slightly from that of the on-design case. Furthermore, an extensive discussion about the flowfields and the effect of viscous interaction is provided. |
本系統中英文摘要資訊取自各篇刊載內容。