Volume 6, Issue 6
Topology Optimization of the Caudal Fin of the Three-Dimensional Self-Propelled Swimming Fish

Zhiqiang Xin & Chuijie Wu

Adv. Appl. Math. Mech., 6 (2014), pp. 732-763.

Published online: 2014-06

Preview Full PDF 10 592
Export citation
  • Abstract

Based on the boundary vorticity-flux theory,  topology optimization of the caudal fin of the three-dimensional self-propelled swimming fish is investigated by combining unsteady computational fluid dynamics with moving boundary and topology optimization algorithms in this study. The objective functional of topology optimization is the function of swimming efficiency, swimming speed and  motion direction control. The optimal caudal fin, whose topology is different from that of the natural fish caudal fin, make the 3D bionic fish achieve higher swimming efficiency, faster swimming speed and better maneuverability. The boundary vorticity-flux on the body surface of the 3D fish before and after optimization reveals the mechanism of high performance swimming of the topology optimization bionic fish. The comparative analysis between the swimming performance of the 3D topology optimization bionic fish and the 3D lunate tail bionic fish is also carried out, and the wake structures of two types of bionic fish show the physical nature that the swimming performance of the 3D topology optimization bionic fish is significantly better than the 3D lunate tail bionic fish.

  • Keywords

3D bionic fish caudal fin topology optimization swimming performance vortex dynamics

  • AMS Subject Headings

76Z10 74F10

  • Copyright

COPYRIGHT: © Global Science Press

  • Email address
  • References
  • Hide All
    View All

@Article{AAMM-6-732, author = {Zhiqiang Xin and Chuijie Wu}, title = {Topology Optimization of the Caudal Fin of the Three-Dimensional Self-Propelled Swimming Fish}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2014}, volume = {6}, number = {6}, pages = {732--763}, abstract = {

Based on the boundary vorticity-flux theory,  topology optimization of the caudal fin of the three-dimensional self-propelled swimming fish is investigated by combining unsteady computational fluid dynamics with moving boundary and topology optimization algorithms in this study. The objective functional of topology optimization is the function of swimming efficiency, swimming speed and  motion direction control. The optimal caudal fin, whose topology is different from that of the natural fish caudal fin, make the 3D bionic fish achieve higher swimming efficiency, faster swimming speed and better maneuverability. The boundary vorticity-flux on the body surface of the 3D fish before and after optimization reveals the mechanism of high performance swimming of the topology optimization bionic fish. The comparative analysis between the swimming performance of the 3D topology optimization bionic fish and the 3D lunate tail bionic fish is also carried out, and the wake structures of two types of bionic fish show the physical nature that the swimming performance of the 3D topology optimization bionic fish is significantly better than the 3D lunate tail bionic fish.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.2013.m394}, url = {http://global-sci.org/intro/article_detail/aamm/46.html} }
Copy to clipboard
The citation has been copied to your clipboard