Hydrodynamic Analysis ofUnderwater Gliders
碩士 === 臺灣大學 === 工程科學及海洋工程學研究所 === 95 === Autonomous Underwater Glider (AUG) is a novel kind of autonomous underwater vehicle that has very long range and very long duration. An underwater glider is driven by buoyancy engine which could change net buoyancy by expelling or infusing water, and moving w...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/32261359821904929970 |
| Summary: | 碩士 === 臺灣大學 === 工程科學及海洋工程學研究所 === 95 === Autonomous Underwater Glider (AUG) is a novel kind of autonomous
underwater vehicle that has very long range and very long duration. An underwater
glider is driven by buoyancy engine which could change net buoyancy by expelling
or infusing water, and moving weight. Since the dynamic characteristics of an
underwater glider depend on its hydrodynamic coefficients significantly, it’s
important to analyze or estimate the hydrodynamic coefficients with accuracy
enough.
In the present study, the CFD commercial software FLUENT was used to
analyze the flow field and determine the hydrodynamic coefficients of an
underwater glider. In order to confirm the numerical approaches and mesh
arrangement in determining the hydrodynamic coefficients of an underwater glider
are appropriate, a comparison calculation was carried out firstly using the
experimental data of 4621 axial symmetric submerged body tested by DTNSRDC
and NTU. Then the same numerical approaches and mesh arrangement are applied
to an underwater glider to determine its hydrodynamic coefficients. Estimation using
DATCOM database is also examined by comparing with the CFD results using
FLUENT.
|
|---|