Fluid Dynamics of Biomimetic Pectoral Fin Propulsion Using Immersed Boundary Method
Joint Authors
Source
Applied Bionics and Biomechanics
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-22, 22 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-07-05
Country of Publication
Egypt
No. of Pages
22
Main Subjects
Abstract EN
Numerical simulations are carried out to study the fluid dynamics of a complex-shaped low-aspect-ratio pectoral fin that performs the labriform swimming.
Simulations of flow around the fin are achieved by a developed immersed boundary (IB) method, in which we have proposed an efficient local flow reconstruction algorithm with enough robustness and a new numerical strategy with excellent adaptability to deal with complex moving boundaries involved in bionic flow simulations.
The prescribed fin kinematics in each period consists of the power stroke and the recovery stroke, and the simulations indicate that the former is mainly used to provide the thrust while the latter is mainly used to provide the lift.
The fin wake is dominated by a three-dimensional dual-ring vortex wake structure where the partial power-stroke vortex ring is linked to the recovery-stroke ring vertically.
Moreover, the connection of force production with the fin kinematics and vortex dynamics is discussed in detail to explore the propulsion mechanism.
We also conduct a parametric study to understand how the vortex topology and hydrodynamic characteristics change with key parameters.
The results show that there is an optimal phase angle and Strouhal number for this complicated fin.
Furthermore, the implications for the design of a bioinspired pectoral fin are discussed based on the quantitative hydrodynamic analysis.
American Psychological Association (APA)
Li, Ningyu& Su, Yumin. 2016. Fluid Dynamics of Biomimetic Pectoral Fin Propulsion Using Immersed Boundary Method. Applied Bionics and Biomechanics،Vol. 2016, no. 2016, pp.1-22.
https://search.emarefa.net/detail/BIM-1094809
Modern Language Association (MLA)
Li, Ningyu& Su, Yumin. Fluid Dynamics of Biomimetic Pectoral Fin Propulsion Using Immersed Boundary Method. Applied Bionics and Biomechanics No. 2016 (2016), pp.1-22.
https://search.emarefa.net/detail/BIM-1094809
American Medical Association (AMA)
Li, Ningyu& Su, Yumin. Fluid Dynamics of Biomimetic Pectoral Fin Propulsion Using Immersed Boundary Method. Applied Bionics and Biomechanics. 2016. Vol. 2016, no. 2016, pp.1-22.
https://search.emarefa.net/detail/BIM-1094809
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1094809