Impact of Caudal Fin Shape on Thrust Production of a Thunniform Swimmer

作     者：Alexander Matta Hodjat Pendar Francine Battaglia Javid Bayandor Alexander Matta;Hodjat Pendar;Francine Battaglia;Javid Bayandor

作者机构：CRashworthiness for Aerospace Structures and Hybrids(CRASH)LabDepartment of Mechanical and Aerospace EngineeringUniversity at BuffaloThe State University of New YorkBuffalo 14260USA Department of Biomedical Engineering and MechanicsVirginia Polytechnic Institute and State UniversityBlacksburg 24061USA Computational Research for Energy Systems and Transport(CREST)LabDepartment of Mechanical and Aerospace EngineeringUniversity at BuffaloThe State University of New YorkBuffalo 14260USA 

出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)

年 卷 期：2020年第17卷第2期

页      面：254-269页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Department of Mechanical Engineering at Virginia Tech Department of Mechanical and Aerospace Engineering of the University at Buffalo State University of New York, SUNY 

主　　题：thunniform locomotion vortex formation caudal fin BCF swimming 

摘      要：Tuna,known for high endurance cruising,have already inspired several underwater robots and swimming *** study uses a biomimetic robotic tuna to investigate how different caudal fin planform geometries affect the thrust production and flow structures during Body and/or Caudal Fin(BCF)*** robot was tethered to a circulating water tunnel,and swimming was simulated by moving water at a constant speed relative to the stationary *** differently shaped caudal fins were tested,one rectangular,one elliptical,and one ***,aspect ratio,and rigidity were kept constant between the three fins to ensure that the effect of caudal fin shape could be *** fins were tested at three freestream velocities and four Strouhal numbers(St)so that comparisons between the fins could be made for a variety of swimming *** swept fin,which is the tested caudal fin most similar to one found on a fusiform swimmer,had the greatest thrust potential at high St,followed by the elliptical *** rectangular fin generally produced the least *** was shown that in addition to producing the most thrust,the swept fin also best stabilized the leading edge vortex that developed during the second half of the stroke.