权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Basic Study on the Analysis of Propulsive Performance of Fish-Like Motion

类鱼运动推进性能分析的基础研究

基本信息

批准号：
14550860
负责人：
NISHIO Shigeru
金额：
$ 1.09万
依托单位：
Kobe University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14550860/
关键词：
fish propulsion hydrodynamic force waving wing bio-mechanics CFD PIV visualization 多関節

项目摘要

The propulsive performance of fish-like motion was analyzed by means of integrated system of numerical simulations and experiments. The two-dimensional waving wing model was employed for the target of basic study of propulsive performance. It has been believed that the propulsion of fishes produces higher performance than that of ships using motor and propeller, but the understanding by means of hydrodynamics were not achieved clearly. The main difficulties of present problem existed in the unsteadiness and non-linearity of flow field. An analysis approach, which estimates the thrust and drag balance at the self-propulsion condition, was proposed, and the experimental and numerical results were considered. Following results were achieved through the two years project.1.The integrated system for the analysis of fish-like propulsion has been established. The integrated system consists of sub-systems of CFD simulation, hydrodynamic force measurement and PIV measurement. The results of numerical simulation and experiment show good agreements, and it has been confirmed that the system could be used for the analysis of the detail of propulsive mechanisms.2.The basic feature of propulsive performance of fish-like motion was investigated, and basic data set of the performance has been obtained. The integrated analysis system based on the common database of wing motion, and parametric study on the relationship between wing motion and propulsive performance was realized. An estimation method for the drag and thrust under self-propulsion condition was proposed, and it was used for the analysis of parametric study.

采用数值模拟与实验相结合的方法，对鱼状运动的推进性能进行了分析。采用二维波浪翼模型作为推进性能基础研究的目标。人们一直认为，鱼类的推进力比使用马达和螺旋桨的船舶的推进力具有更高的性能，但从流体力学的角度对其理解并不清楚。目前问题的主要难点在于流场的非定常和非线性。提出了一种估算自推进状态下的推力和阻力平衡的分析方法，并综合考虑了实验结果和数值结果。通过两年的项目，取得了以下成果：建立了鱼状推进综合分析系统。该综合系统由CFD仿真、水动力测量和PIV测量子系统组成。数值模拟与实验结果吻合较好，证实了该系统可用于推进机构的细节分析。研究了鱼状运动推进性能的基本特征，得到了鱼状运动推进性能的基本数据集。建立了基于通用机翼运动数据库的综合分析系统，实现了对机翼运动与推进性能关系的参数化研究。提出了一种自推进条件下的阻力和推力估计方法，并将其用于参数分析研究。