因直升機於船艦起降時可能遭遇氣流通過機庫時所產生之渦流結構影響，本研究透過質點影像測速法搭配 Simple Frigate Shape (SFS)模型於迴流水槽進行直升機起降甲板風場相關實驗，並參照現有船艦之機庫設計，以 SFS 模型為基礎衍伸 Base、Corner、Incline、Chamfer 四種機庫幾何構型，分別測量其於正向迎風與斜向迎風時之流場結構，並分析其量測平面之流線、流速、渦度與各方向紊流強度等，初步歸納其機庫結構所產生之跡流流場特徵，與其在不同迎風角下之流場差異性，如 U 型渦流結構、甲板中心流向、高紊流強度位置等，根據以上結果的比較來得到各機庫幾何構型的流場結構差異，再以獲得之結論為基礎，給予直升機駕駛在不同條件下起降時對整體風場結構的判斷依據，或是其降落路徑可能遭遇之風向、紊流等，增加其應變能力，並提供未來船艦機庫外型設計與配置上，對直升機起降甲板風場控制與優化之參考方向。
實驗結果方面，本研究所量測獲得之速度分佈已與國外於風洞中測得之結果相當接近，然而質點影像測速法難以獲得完整數據之特定位置，或是擁有較為複雜流場結構的機庫構型，在未來可以透過更多模擬、實驗與真實船艦海上風場測試，來進行本研究結果正確性的驗證與細節的補充。

During the landing or taking off procedure on the flight deck of ships, a helicopter might be influenced by the vortex structure caused by the wind passing through the hangar. To study the flow field in the region of flight deck, this research is to test Simple Frigate Shape (SFS) Model by using Particle Image Velocimetry (PIV) in circulating water tank. With observing the flow structure of four types of hangar (Base, Corner, Incline, and Chamfer) and analyzing the streamlines, flow speed, vorticity, and turbulence intensity, we can approximately summarize the characteristics of flow structure influenced by the airwake of hangar. Therefore, with taking these conclusions as a basic knowledge, we can give pilots several guidelines to determine the flow structure under different conditions. Furthermore, it also can provide some concepts of flight deck flow field controlling and optimizing when designing the structure and allocation of the hangar in the future.

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