Results 231 to 240 of about 2,077 (252)

Near-wall cylinder wake deflection and aero-optical characteristics

Physics of Fluids
As a passive flow controller, a circular cylinder is commonly employed in airborne optical systems to disturb the incoming flow and thereby mitigate aerodynamic interference with optical components. Under near-wall constraints, the spacing between the cylinder and the wall exerts a significant influence on several flow characteristics, including wake ...
Qiang Zhang, Kunpeng Long, Xiafei Ma, Haotong Ma, Rongrong Xue, Jinying Li   +5 more
openaire   +1 more source

Pervasiveness of Excessive Segmental Bridge Deflections: Wake-Up Call for Creep

ACI Structural Journal, 2011
An obsolete standard recommendation for creep design led to significant underestimation of the observed 18-year deflections of the Koror-Babeldaob (KB) Bridge in the island nation of Palau. A search for data on similar bridges revealed that 56 other large-span, prestressed concrete, segmentally erected box girders (66 by the time of proof) have been ...
openaire   +1 more source

Analysis of Strouhal number based equivalence of pitching and plunging airfoils and wake deflection

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2014
Numerical simulations have been used to analyze the equivalence of pitching and plunging motions found in a flapping NACA0012 airfoil. Two-dimensional incompressible Navier–Stokes equations are solved at Reynolds number of 10 3 over a range of Strouhal numbers.
Muhammad Saif Ullah Khalid, Imran Akhtar, Naveed Iqbal Durrani   +2 more
openaire   +1 more source

Influence analysis of Waverider wake on the deflection rate of light

Aerospace Systems, 2022
Chenlin Guo, Fang Chen
openaire   +1 more source

Mechanisms of Deflection Angle Change in the Near and Far Vortex Wakes behind a Heaving Airfoil

51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2013
It has been reported that an asymmetric wake is formed downstream of a plunging airfoil at a moderate heaving amplitude and frequency. The behavior of vortex dipole in the wake is recognized as the key contributor that determines the deflection angle of the asymmetric wake. While previous literature deliberately discussed the vortex dipoles in the near
Zhenglun Wei, Z. Charlie Zheng
openaire   +1 more source

Deflection of wind turbine wakes by yaw misalignment – Simulation and field testing [PDF]

, 2020
The primary objectives of wind farm control is to mitigate the negative effects of the aerodynamic interactions between turbines, which can lead to reduced power yields and to increased structural loadings. In the scope of this thesis, field experiments and numerical simulations were performed to better understand the potential of wake deflection ...
openaire  

A novel yaw wake model for wind farm control applications

Renewable Energy, 2023
Wen Zhong Shen, Ju Feng, Weijun Zhu
exaly  

Review for "On the wake deflection of vertical axis wind turbines by pitched blades"

2022
openaire   +2 more sources

Numerical Simulation of Wake Deflection Control around NACA0012 Airfoil Using Active Morphing Flaps ()

Journal of Flow Control Measurement & Visualization, 2020
Tomonaga Okabe
exaly  

Wake deflection and propulsive performance of intermittently flapping foil

Physical Review Fluids
Bowen Jin, Jiadong Wang, Jian Deng
openaire   +1 more source