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標題: | 水域遊憩載具外型及水下操縱運動性能探討 Study on the Hull Form and Underwater Maneuverability of a Marine Recreation Vehicle |
作者: | Chia-Hou Kou 郭家豪 |
指導教授: | 邱逢琛 |
關鍵字: | 遊憩載具,運動數學模式,流體動力係數,計算流體力學,操縱性能, MRV,mathematical model of maneuvering motions,hydrodynamic coefficients,CFD,maneuverability, |
出版年 : | 2011 |
學位: | 碩士 |
摘要: | 本研究主要目的在探討一種可在水面及水下自由航行,享受速度感的水域遊憩載具(Marine Recreation Vehicle; MRV),並可做為巨型遊艇(Mega Yacht)或超級遊艇(Super Yacht)附加遊憩載具的可行性。由於需兼顧水面、水下皆能有良好的操控性能,本研究透過計算流體力學(CFD)分析軟體的輔助,進行載具外型設計,並針對載具進行水面航行速度預估,以及水下流體動力係數計算以便模擬操縱運動。本研究將求解得之水下流體動力係數代入本研究室之前依照日本在船舶操縱運動所建構的MMG模組化數學模式所發展的潛艦六自由度運動數學模式進行水下航行性能預估。惟針對該數學模式,本研究附加修改以適合本論文新設計之載具數學操控模式。
本研究透過計算流體力學分析軟體完成載具於水面及水下航行的優、缺點分析,並設計適合的遊憩載具外型。在水面航行模擬上,完成載具於水面航行的驗證,並完成載具水面航行的速度預估。於水下航行時的流體動力係數求解上,完成操縱所需的流體係數驗證及求解。將解得之載具流體動力係數帶入新設計的載具操縱數學模式,結果顯示於水下航行操縱性能上,直線航行性能可達設計需求;在迴旋測試及ZIG-ZAG模擬上,模擬結果顯示舵板尺寸並非越大越好,大型舵板雖可有效減少迴旋半徑,但水平ZIG-ZAG航行模擬結果則顯示大型舵板之超射角過大,故適當的舵板尺寸才能有良好的操縱性能。綜整本研究的結果,顯示在妥善的載具外型及控制面設計下,是可達到遊憩載具的航速設計要求,並能獲得適當的操縱性能。 Present study aims at developing a Marine Recreation Vehicle (MRV) which can be used to enjoy speedy navigation both on water surface and in underwater, as a recreation vehicle appended to a Mega Yacht or a Super Yacht. In the present study, the CFD software package of FLUENT is applied to evaluate the possibly achieved speed of the designed MRV while running on water surface or in underwater propelled by electrical power of given rate. In addition, the hydrodynamic coefficients of the vehicle in underwater are also calculated by FLUENT. These coefficients are substituted into a mathematical model to simulate its maneuvering motions in underwater. The mathematical model was developed in a previous study and some modifications are given in the present study for applying to the MRV. Turning circle maneuvers and Zig-zag maneuvers are simulated for investigating the maneuverability of the proposed MRV. It is confirmed that the present design of the hull form and control surfaces can meet both requirements of speed on water surface and in underwater. Furthermore, proper maneuverability can be also achieved. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/25997 |
全文授權: | 未授權 |
顯示於系所單位: | 工程科學及海洋工程學系 |
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