Results 21 to 30 of about 1,160,382 (294)
Applied Sciences, 2019 The effect of non-sinusoidal motion which influences the energy extraction performance of foil is considered in this paper. Two oscillation motions, the combined non-sinusoidal plunging and sinusoidal pitching motion, as well as the combined non ...
Yulu Wang, Fahui Zhu, Yonghui Xie
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Forced pitch motion of wind turbines [PDF]
Journal of Physics: Conference Series, 2016 The possibility of a wind turbine entering vortex ring state during pitching oscillations is explored in this paper. The aerodynamic performance of the rotor was computed using the Helicopter Multi-Block flow solver. This code solves the Navier-Stokes equations in integral form using the arbitrary Lagrangian-Eulerian formulation for time-dependent ...
Leble, V., Barakos, G.
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Polish Maritime Research, 2020 Simulation of the hydrodynamic performance of a floating current turbine in a combined wave and flow environment is important. In this paper, ANSYS-CFX software is used to analyse the hydrodynamic performance of a vertical-axis turbine with various ...
Zhang Wanchao +3 more
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Biomimetic Intelligence and Robotics, 2022 In this study, the aerodynamic performance of flapping wings using a parallel motion was investigated and compared with the insect-like “fan-sweep” motion, and the effect of adding a slit to the wings was analyzed.
Zenggang Zhu +5 more
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Rapidly pitching plates in decelerating motion near the ground [PDF]
, 2023 Birds employ rapid pitch-up motions for different purposes: perching birds use this motion to decelerate and come to a complete stop while hunting birds, like bald eagles, employ it to catch prey and swiftly fly away. Motivated by these observations, our
Adhikari, Dibya R., Bhattacharya, Samik
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International Journal of Sports Physical Therapy, 2021 # Background Hip range of motion (ROM) during baseball pitching is associated with trunk rotation and shoulder kinematics, which has shown to influence medial elbow valgus loading and pitching performance.
Giorgio Zeppieri Jr. +3 more
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Politeknik Dergisi, 2021 The aim of this study is to determine the oscillation center position change that can reduce the dynamic wheel load oscillations during the pitching motion. For this purpose, the pitch and heave motions were coupled to each other during the pitch motion by changing the positions of the pitch and heave oscillation centers according to each other.
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The Sub-Riemannian Geometry of Screw Motions with Constant Pitch
The Journal of Geometric Analysis, 2023 We consider a family of Riemannian manifolds M such that for each unit speed geodesic gamma of M there exists a distinguished bijective correspondence L between infinitesimal translations along gamma and infinitesimal rotations around it. The simplest examples are R^3, S^3 and hyperbolic 3-space, with L defined in terms of the cross product.
Eduardo Hulett +2 more
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Journal of Applied Fluid Mechanics, 2021 Flapping foil energy harvesting systems are considered as highly competitive devices for conventional turbines. Several research projects have already been carried out to improve performances of such new devices. This paper is devoted to study effects of
A. Boudis +5 more
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BMC Sports Science, Medicine and Rehabilitation, 2022 Background A baseball pitcher with decreased scapular control may not be able to achieve suitable scapular motion at maximum shoulder external rotation (MER) of baseball pitching during the pitching action.
Yuki Nomura +6 more
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