A fundamental study on the dynamics of underwater towed vehicle

水下拖曳体动力学基础研究

• 批准号: 60460149
• 负责人: OHKUSU Makoto
• 金额: $ 4.74万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60460149/
• 关键词: Underwater towed vehicle; Six degrees of freedom; Numerical simulation; 曳航索

Principal results obtained in this project can be summarized as follows:1) Using a fin-controllable model of underwater towed vehicle, a number of static experiments were carried out for various attitude parameters of a model. Forced oscillation tests were also conducted to study the forward-speed and frequency effects on added mass and damping coefficients.2) A new practical method of estimating hydrodynamic coefficients was proposed on the basis of the Ing theory.3) The motion equations with six degrees of freedom were derived. A simulation program developed in this project made it possible to investigate the coupling behaviour of the vertical and transverse motions of a towed fish.4) A generalized differential equation for the dynamics of a towing cable was obtained with the torsion effect taken into account. The numerical results were found to coincide favorably with the experiments.

在该项目中获得的主要结果可以概括如下：1）使用水下拖曳车辆的鳍可控制模型，进行了许多静态实验，以获取模型的各种态度参数。还进行了强制振荡测试，以研究对添加质量和阻尼系数的前速和频率影响。2）提出了一种根据ING理论估算流体动力系数的新实用方法。3）3）运动方程式为6度的运动方程自由得出。该项目中开发的模拟程序使得可以研究牵引鱼的垂直和横向运动的耦合行为。4）考虑到牵引电缆的动力学的广义微分方程，并考虑到了扭转效果。发现数值结果与实验有利。