Results 241 to 250 of about 116,310 (262)

Performance Analysis of Flapping Foil Flow Energy Harvester Subjected to Non-Sinusoidal Pitching Motion

open access: yes2018 Fluid Dynamics Conference, 2018
Two-dimensional flow simulation study is carried out to investigate the aerodynamic performance and efficiency of Fully Active flapping foil flow energy harvesters subjected to non-sinusoidal pitching motion. The device comprises of NACA0015 airfoil mounted on a translational spring and damper system.
Ali Javed   +4 more
exaly   +5 more sources

Thrust enhancement of a flapping airfoil using a non-sinusoidal motion trajectories

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2021
A parametric numerical study is conducted to assess the effect of trajectory nature on the propulsive performances of a NACA0014 flapping airfoil. Sinusoidal and non-sinusoidal plunging and pitching trajectories are combined to achieve sought flapping trajectories.
Mahmoud Mekadem   +3 more
openaire   +3 more sources

Effects of non-sinusoidal pitching motion on energy input performance of micro-linear turbine cascade

Ocean Engineering, 2020
Abstract In this paper, a numerical simulation of a micro-linear turbine cascade is presented. The upstream stay vane and downstream guide vane were surrounded by incompressible flow, and the guide vane was modeled with forced pitching motions. The implicit immersed boundary method was used as the moving boundary flow solver.
Wen-Quan Wang   +3 more
openaire   +3 more sources

Influence of thickness on performance characteristics of non-sinusoidal plunging motion of symmetric airfoil

Aerospace Science and Technology, 2018
Abstract For the past few decades flapping wing aerodynamics has attracted a great deal of research interest from both the aeronautical and biological communities pertaining to the development of MAVs. The objective of this study is to examine and understand the effect of non-dimensional plunge amplitude and reduced frequency on propulsive ...
R. Sankarasubramanian   +5 more
openaire   +3 more sources

Effects of non-sinusoidal pitching motion on energy extraction performance of a semi-active flapping foil

Renewable Energy, 2016
Abstract Numerical simulations are used to study the energy harvester based on a semi-active flapping foil, in which the profile of the pitching motion is prescribed and the heaving motion is activated by the vertical hydrodynamic force. We consider a two-dimensional NACA0015 airfoil with the Reynolds number Re = 1000.
Lubao Teng   +3 more
openaire   +3 more sources

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