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題 名 | Dynamic Flowfield Simulation for a WIG MK1=MK1地效飛行器動態流場模擬 |
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作 者 | 徐子圭; 戴昌賢; | 書刊名 | 航空技術學院學報 |
卷 期 | 5:1 民95.08 |
頁 次 | 頁353-364 |
分類號 | 447.55 |
關鍵詞 | 飛翼船; 地面效應; WIG; CFD; Ground effect; |
語 文 | 英文(English) |
中文摘要 | 對飛機而言,在低空域飛行是屬於高危險與高專業的;但對飛翼船而言,確是被設計成在此空域具安全與穏定性之飛行工具。在本項研究主要使用計算流體力學之方法,採用之數學模式為依時性之雷諾均值Navier-Stokes 方程組;程式建立時,即列入了非定常流場計算用之動態網格系統及適型之多區塊網格邊界處理模式,用以模擬氣流流經飛翼船與滑動邊界間所產生現象。研究成果顯示,可充分有效模擬飛翼船現象;同時了解於動態滑移邊界下,飛翼船翼面之壓力變化與滑動邊界間距離之相關性。 |
英文摘要 | WIG (Wing In Ground; Ekranoplan) is that it is unique to the class of vehicle that is designed to fly very close to a surface (water or ground), and that in so doing these vehicles benefit from the peculiarities of aerodynamics in that region. For aircraft, low-level flying is highly dangerous and highly specialized. But WIGs are designed to fly constantly and steadily in this mode. The purpose of this paper is to establish a set of numerical methods to determine the unsteady and steady flowfield. For CFD simulated, a 3D Navior-Stokes analyzer based on finite volume method is developed to simulate the complex flow field in a WIG. According to the results of this research, the analyser can indeed effectively modulate and simulate the aerodynamic characteristic of the WIG. The Position of the aerodynamic center is related to the Length between the boundary and WIG. The dynamic flow field phenomena can be identified from the numerical results. |
本系統中英文摘要資訊取自各篇刊載內容。