Abstract
Bio-mimetic propulsion systems are recently being explored for autonomous underwater vehicles (AUVs) and autonomous surface vehicles (ASVs). Many studies are conducted for adopting Body–Caudal Fin propulsion systems to AUVs and ASVs. This primitive study aims to numerically analyse the effect of asymmetry on the thrust developed by six caudal fin designs inspired by the asymmetry of shark fins. The fins are divided into two sets, one with constant fork angle and other with varying fork angle. The fins are assumed to be of the same area in order to eliminate the effect of area on thrust developed. Through computer simulations, it is observed that the asymmetry causes the average thrust to decrease. But from two cases studied, the forking angle has an influence on thrust generated. The variation of thrust during a cycle is less in case of asymmetry.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Krishnadas A, Ravichandran S, Rajagopal P (2018) Analysis of biomimetic caudal fin shapes for optimal propulsive efficiency. Ocean Eng 153:132–142
Felich KL, Lauder GV, Passive mechanical models of fish caudal fins: effects of shape and stiffness on self-propulsion Bioinspiration Biomimetics 10
Geder JD, Ramamurti R, Edwards D, Young T, Pruessner M (2014) Development of a robotic fin for hydrodynamic propulsion and aerodynamic control. In: Oceans-St. John’s, pp. 1–7
Blake RW (2014) Influence of pectoral fin shape on thrust and drag in labriform locomotion. J Zool 194:53–66
Esposito CJ, Tangorra JL, Flammang BE, Lauder GV (2012) A robotic fish caudal fin: effects of stiffness and motor program on locomotion performance. J Exp Biol 215:56–67
Triantafyllon GS, Triantafyllon MS, Grosenbaugh MA (1993) Optimal thrust development in oscillating foils with application to fish propulsion. J Fluids Struct 7:205–224
ANSYS Inc 2011, ANSYS fluent user’s guide
Mittl R, Dong H, Bozkuttas M, Lauder G, Maden P (2006) Locomtion with flexible propulsor: II. Computational modelling of pectoral fin swimming in sunfish. Bioinspiration Biomimetics 1:514–535
Heathcote S, Gurusul I (2007) Flexible flapping airfoil propulsion at low Reynolds number. AIAA J 45:1066–1079
Anderson JM, Streitien K, Barett DS, Triantafyilou MS (1998) Oscillating foils of high propulsive efficiency. J Fluid Mech 360:41–72
Acknowledgements
This research was supported by the Science and Engineering Research Board, a statutory body of the Department of Science and Technology (DST), Government of India, through the funded project ECR/2016/001501.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Manohar, V., Maniyeri, R. (2021). Numerical Study of Effect of Asymmetry on Performance of Bio-mimetic Caudal Fin Shapes. In: Prabu, T., Viswanathan, P., Agrawal, A., Banerjee, J. (eds) Fluid Mechanics and Fluid Power. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-0698-4_59
Download citation
DOI: https://doi.org/10.1007/978-981-16-0698-4_59
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-16-0697-7
Online ISBN: 978-981-16-0698-4
eBook Packages: EngineeringEngineering (R0)