Hydrodynamic Analysis of Underwater Glider with Installation of CTD
碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 96 === Autonomous Underwater Glider is a new invention of Autonomous Underwater Vehicle (AUV) in recent years. Underwater Glider has long duration and long range, especially for an apparatus is called CTD sensor that could also collect many physical data of the oc...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2008
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| Online Access: | http://ndltd.ncl.edu.tw/handle/33602368989885553447 |
| Summary: | 碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 96 === Autonomous Underwater Glider is a new invention of Autonomous Underwater Vehicle (AUV) in recent years. Underwater Glider has long duration and long range, especially for an apparatus is called CTD sensor that could also collect many physical data of the ocean.
Most of CTD sensors are placing for underneath one side of wing of underwater glider therefore the dynamic characteristics of an underwater glider depends on its hydrodynamic coefficients significantly. The variety of geometry has extremely effect to hydrodynamic coefficients, so it is important to estimate or analyze the difference between hydrodynamic coefficients which has the set of CTD sensor or not of underwater glider.
The computation of fluid dynamics software “FLUENT” is used for this study. In order to make sure the numerical approaches and mesh arrangement in determining the hydrodynamic coefficients of an underwater glider are appropriate. The first stage is using the data of 4621 axial symmetric submerged body reported by DTNSRDC to simulate the hydrodynamic coefficients. As the result of 4621 simulation is closed to experimental data, then we can use the same numerical approaches and mesh arrangement to calculate the hydrodynamic coefficients of underwater glider at angles of pitch from -25 to +25 degrees which has CTD sensor or not.
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