Results 31 to 40 of about 74,712 (235)
Sinusoidal-gust generation with a pitching and plunging airfoil
, 2019 The generation of uniform, periodic gust disturbances in an experimental context is demonstrated using a single oscillating airfoil. A pitching and heaving symmetric airfoil is suggested as a simpler alternative to existing gust-generation methods.
Kissing, Johannes +2 more
core +1 more source
Applied Sciences, 2020 The dynamic stall characteristics of rotor airfoil are researched by employing unsteady Reynolds-Averaged Navier-Stokes (RANS) method under oscillating freestream velocity conditions.
Qing Wang, Qijun Zhao
doaj +1 more source
Effect of Tailing-Edge Thickness on Aerodynamic Noise for Wind Turbine Airfoil
Energies, 2019 The influence of wind turbine airfoil trailing edge thickness on aerodynamics and aerodynamic noise characteristics was studied using the computational fluid dynamics (CFD)/ Ffowcs Williams–Hawkings (FW–H) method in the present work.
Xinkai Li +4 more
doaj +1 more source
Numerical Simulation of Flapping Airfoil Aerodynamic Characteristics
Applied SciencesFlapping airfoil flight technology is widely used in defense and civilian fields, and huge economic benefits can be created. The bionic flapping airfoil is the research object of this paper.
Junjie Xu +3 more
doaj +1 more source
Effect of Using Bumps on Wings Aerodynamic Characteristics at Low Reynolds Numbers [PDF]
Engineering and Technology Journal, 2010 The effect of using bumps on the aerodynamic characteristics of airfoil at low Reynolds numbers is presented in this research. A theoretical study was done on the (NACA 4418) airfoil consist of bumps that have radius (2% c) on the upperand lower surfaces
doaj +1 more source
Machines, 2022 Generating a high startup torque is a critical factor for the application of small wind turbines in regions with low wind speed. In the present study, the blades of a small wind turbine were designed and optimized to maximize the output power and startup
Vahid Akbari +4 more
doaj +1 more source
Zhongguo Jianchuan Yanjiu, 2023 Objective This paper aims to study the effects of the freezing phenomenon of supercooled water droplets in intake air on the aerodynamic performance of a marine power intake system under cold marine environment conditions.
Lei PENG +3 more
doaj +1 more source
Unsteady Thin Airfoil Theory of a Biomorphing Airfoil [PDF]
Journal of the Korean Society for Aeronautical & Space Sciences, 2006 Birds and insect in nature morph their mean camberline shapes to obtain both lift and thrust simultaneously. Previous unsteady thin airfoil theories were derived mainly for a rigid flapping airfoil. An extended unsteady thin airfoil theory for a deformable airfoil is required to analyze the unsteady two-dimensional aerodynamic characteristics of a ...
openaire +1 more source
Advanced Robotics Research, EarlyView.This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska +2 more
wiley +1 more source
FluidsIn aerospace, flow control techniques have improved the separation flow characteristics around airfoils by various means. In this paper, the delayed detached eddy simulation (DDES) technique is used to simulate the detailed flow field around the NACA0021
Zelin Liu, Kaidi Li, Xiaojing Sun
doaj +1 more source