Experimental and Numerical Study of Penguin Mode Flapping Foil Propulsion System for Ships
Experimental and Numerical Study of Penguin Mode Flapping Foil Propulsion System for Ships作者机构：Ocean Engineering Indian Institute of Technology Madras Chennai 600036 India Texas A&M University College Station TX 77840 USA
出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)
年 卷 期：2017年第14卷第4期
页 面：770-780页
核心收录：
学科分类：080103[工学-流体力学] 08[工学] 082402[工学-轮机工程] 080104[工学-工程力学] 0824[工学-船舶与海洋工程] 0801[工学-力学（可授工学、理学学位）]
基 金：Department of Ocean Engineering Indian Institute of Technology Madras India for providing financial support for doing this project
主 题：biomimetic propulsion flapping foil penguin locomotion Strouhal number tandem arrangement thrust coefficient
摘 要：The use of biomimetic tandem flapping foils for ships and underwater vehicles is considered as a unique and interesting concept in the area of marine propulsion. The flapping wings can be used as a thrust producing, stabilizer and control devices which has both propulsion and maneuvering applications for marine vehicles. In the present study, the hydrodynamic per- formance of a pair of flexible flapping foils resembling penguin flippers is studied. A ship model of 3 m in length is fitted with a pair of counter flapping foils at its bottom mid-ship region. Model tests are carried out in a towing tank to estimate the propulsive performance of flapping foils in bollard and self propulsion modes. The same tests are performed in a numerical environment using a Computational Fluid Dynamics （CFD） software. The numerical and experimental results show reasonably good agreement in both bollard pull and self propulsion trials. The numerical studies are carried out on flexible flapping hydrofoil in unsteady conditions using moving unstructured grids. The efficiency and force coefficients of the flexible flapping foils are determined and presented as a function of Strouhal number.
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