碩士 / 國立交通大學 / 工學院精密與自動化工程學程 / 106 / The purpose of this thesis is to investigate the effect of the different deflectors on the drag force of the remotely operated underwater vehicle (ROV) at different working speeds by computational fluid dynamics (CFD). In order to confirm the reliability of the analytical results, we verify the analytical results by the experiment of the drag force of fluid. In this article, we apply κ-ε turbulence model of ANSYS's FLUENT to do the analysis of fluid dynamics of three dimensions at different working speeds for the ROV. We use the relation
between the structural strain of the fixture and the applied force on the fixture to measure the drag force in the experiment and compare the experimental results with the analytical results to make sure the reliability of the analytical results. The analytical results show that the drag force of the deflector of the type of long-all around is the lowest among four types of the deflector. That appropriately increases the length of the deflector and more streamlined appearance can reduce the condition of fluid directly impacting the surface of the ROV and help to improve the drag force of fluid. The analytical results show that the drag force can be reduced from 7.9% ~ 12.5% when the different types of the deflector are installed on the ROV at the maximum working speed.
| Identifer | oai:union.ndltd.org:TW/106NCTU5146004 |
| Date | January 2018 |
| Creators | Hung, Te-Chieh, 洪德傑 |
| Contributors | Cheng, Stone, 鄭泗東 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 75 |
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