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.

本课题取得的主要成果如下：1)利用水下拖曳航行器的鳍控模型，对模型的各种姿态参数进行了大量的静态实验。在此基础上，提出了一种新的实用的水动力系数估算方法。3)推导了六自由度运动方程。本项目开发的仿真程序使研究拖缆垂向运动和横向运动的耦合行为成为可能。4)建立了考虑扭转影响的拖缆动力学广义微分方程组。数值计算结果与实验结果吻合较好。