Results 221 to 230 of about 11,080,495 (248)
Simultaneous Measurement of Peripheral Ocular Aberrations Using a Virtual Multi-Eccentric Hartmann-Shack Aberrometer. [PDF]
Sensors (Basel)Morales-Marín J +3 more
europepmc +1 more source
Electro-Ribbon Actuator-Driven, Responsive Skating Robot Inspired by Water Striders. [PDF]
SmallLiu J, Zhao Y, Fu H, Liu Y, Zhou X.
europepmc +1 more source
Nonlinear model reduction for large-scale structures via dual substructuring. [PDF]
Sci RepFlores PA.
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2018 IEEE 21st International Multi-Topic Conference (INMIC), 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 +3 more
exaly +4 more sources
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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.
Xue-ming Shao, Jian Deng, Dingyi Pan
exaly +2 more sources
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.
Xue-ming Shao, Jian Deng, Dingyi Pan
exaly +2 more sources
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 ...
Akram Mohammad +2 more
exaly +2 more sources
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 ...
Akram Mohammad +2 more
exaly +2 more sources
Thrust enhancement of a flapping airfoil using a non-sinusoidal motion trajectories
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2021A 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 +1 more source
Foil locomotion through non-sinusoidal pitching motion
Journal of Fluids and Structures, 2019Abstract We investigate the propulsive characteristics of a neutrally buoyant foil that self propels as it pitches about its quarter chord with a prescribed time periodic waveform. For a fixed pitching frequency and amplitude, we find the foil motion to be strongly dependent on the prescribed waveform.
Das, Anil +2 more
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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 +1 more source
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 +1 more source