Tubercles and their applications

MD Bolzon, RM Kelso, M Arjomandi - Journal of aerospace …, 2016 - ascelibrary.org
The implementation of tubercles on foils has demonstrated significant benefits, with the most
evident occurring during post-stall. However, the flow mechanism (s) responsible for these …

A bio-inspired twin-protuberance hydrofoil design

R Kant, A Bhattacharyya - Ocean Engineering, 2020 - Elsevier
The hydrodynamic characteristics of a novel twin-protuberance hydrofoil design mimicking
the two prominent tubercles present on a humpback whale flipper are investigated. The foil …

LES study of unsteady cavitation characteristics of a 3-D hydrofoil with wavy leading edge

MR Pendar, E Esmaeilifar, E Roohi - International Journal of Multiphase …, 2020 - Elsevier
The present study seeks to conduct numerical investigations of the cavitating flow
characteristics around a sinusoidal wavy leading edge (WLE) 3-D hydrofoil underlying a …

An experimental study on flow separation control of hydrofoils with leading-edge tubercles at low Reynolds number

Z Wei, TH New, YD Cui - Ocean Engineering, 2015 - Elsevier
Hydrodynamic characteristics of hydrofoils with leading-edge tubercles were experimentally
investigated in a water tunnel at a Reynolds number of Re= 1.4× 10 4. Particle image …

Evolution of the streamwise vortices generated between leading edge tubercles

KL Hansen, N Rostamzadeh, RM Kelso… - Journal of Fluid …, 2016 - cambridge.org
Sinusoidal modifications to the leading edge of a foil, or tubercles, have been shown to
improve aerodynamic performance under certain flow conditions. One of the mechanisms of …

[HTML][HTML] Passive control of dynamic stall in a H-Darrieus Vertical Axis Wind Turbine using blade leading-edge protuberances

ANC Gonçalves, JMC Pereira, JMM Sousa - Applied Energy, 2022 - Elsevier
Dynamic stall flow conditions affect the performance of most Vertical Axis Wind Turbine
(VAWT) designs; however, the associated losses are especially relevant in smaller turbines …

[HTML][HTML] Transient cavitating flow structure and acoustic analysis of a hydrofoil with whalelike wavy leading edge

Z Li, Z Qian, B Ji - Applied Mathematical Modelling, 2020 - Elsevier
In this paper, the open source software OpenFOAM is used to perform a numerical
investigation of the cavitating flow around a modified NACA63 4-021 hydrofoil with …

Dynamic mode decomposition analysis of flow characteristics of an airfoil with leading edge protuberances

M Zhao, Y Zhao, Z Liu - Aerospace Science and Technology, 2020 - Elsevier
A numerical investigation of the flow mechanisms and fluctuating aerodynamic
performances of an airfoil with leading-edge protuberances is presented within post-stall …

Bionic leading-edge protuberances and hydrofoil cavitation

D Li, Q Yang, W Yang, H Chang, H Wang - Physics of Fluids, 2021 - pubs.aip.org
Cavitation is a challenging and complex phenomenon in hydraulic machineries such as
pumps, turbines, and marine propellers. The shedding and collapse of the cavitation cloud …

LES investigation of the cavitating hydrofoils with various wavy leading edges

X Zhao, H Cheng, B Ji - Ocean Engineering, 2022 - Elsevier
In the current paper, large eddy simulation is utilized to study the effect of various wavy
leading edges on the control of cavitation around a modified NACA63 4-021 hydrofoil in the …