A Numerical Simulation of a Fishlike Body’s Self-propelled C-start
This paper presents a numerical method to deal with a two-dimensional deformable fishlike bodys large deformation self-propelled swimming. Overset grids are employed to discretize the flow domain around the large deforming body which is simulated by a foil. The kinematics, energetics and the flow structures of a typical C-start are predicted by a coupling solution of the two-dimensional incompressible fluid dynamics and the deforming body dynamics. As a typical practice, the foil performs a C-start-like motion in stationary water based on the prescribed deforming mode. It is found that the locomotion of the foil is similar to a real fishs C-start and the hydrodynamic effi- ciency of this C-start model is about 29％ which is close to the value calculated by the previous theoretical estimation. Particularly, a structure of three significant concentrated vortices is discovered in the wake.
fishlike C-start numerical simulation self-propelled swimming
G. Liu Y. L. Yu B. G. Tong
The Laboratory for Biomechanics of Animal Locomotion, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
国际会议
广州
英文
480-483
2011-06-30（万方平台首次上网日期，不代表论文的发表时间）