Fish-inspired oscillating and/or undulating hydrofoil in a free stream flow: a review on thrust generation mechanisms

S Shukla, A Sharma, A Agrawal, R Bhardwaj - Journal of the Indian …, 2024 - Springer
A review of recent literature on thrust generation mechanisms by a hydrofoil, bioinspired
from fish locomotion is presented. The present work considers fish-inspired periodic …

Effects of Reynolds number and average angle of attack on the laminar scaling of oscillating foils

S Verma, BRS Freeman, A Hemmati - Physics of Fluids, 2022 - pubs.aip.org
The variation in thrust generation with respect to Reynolds number was numerically
evaluated for an oscillating foil with combined pitching and heaving motion at a range of …

Hydrodynamics and propulsion of a hydrofoil undergoing leading-edge pitching and traveling wave-based surface undulation

S Shukla, A Sharma, A Agrawal, R Bhardwaj - Physics of Fluids, 2024 - pubs.aip.org
We numerically study the fluid–structure interaction of a free-stream flow across a hydrofoil
pitching at its leading edge with superimposed traveling wave-based surface undulations …

[HTML][HTML] Numerical validation of simple non-stationary models for self-propelled pitching foils

R Fernandez-Feria, E Sanmiguel-Rojas… - Ocean …, 2022 - Elsevier
High-resolution numerical simulations of the self propelled locomotion of two-dimensional
pitching foils are used to assess simplified models based on linear potential theory for the …

[HTML][HTML] Efficient self-propelled locomotion by an elastically supported rigid foil actuated by a torque

PE López-Tello, R Fernandez-Feria… - Applied Mathematical …, 2023 - Elsevier
A new theoretical model is presented for an aquatic vehicle self-propelled by a rigid foil
undergoing pitching oscillations generated by a torque of small amplitude applied at an …

Reynolds and Mach Number Effects on Propulsive Performance for a Pitching Airfoil

D Ma, G Li, J Liu, F Wang - AIAA Journal, 2024 - arc.aiaa.org
In this work, numerical simulations are conducted to investigate the effects of Reynolds (Re)
and Mach (M a) numbers on thrust characteristics for a pitching airfoil. The results show that …

Long-distance sinusoidal actuation in self-propelling apparatus: a novel spiral spring-based crank rocker mechanism

R Joshi, J Arakeri - Sādhanā, 2024 - Springer
Self-propelled oscillating foils provide an effective model system to explore the intricacies of
oscillatory and undulatory bio-locomotion, particularly the coupled thrust and drag …

Universal scaling laws for propulsive performance of thrust producing foils undergoing continuous or intermittent pitching

A Das, RK Shukla, RN Govardhan - Fluids, 2022 - mdpi.com
High efficiency thrust generating foils are extensively being researched for potential use as
thrusters in micro air vehicles and biomimetic autonomous underwater vehicles. Here, we …