Results 21 to 30 of about 162,037 (197)

Inflatable Leading Edge-Based Dynamic Stall Control considering Fluid-Structure Interaction

open access: yesInternational Journal of Aerospace Engineering, 2020
The inflatable leading edge (ILE) is explored as a dynamic stall control concept. A fluid-structure interaction (FSI) numerical method for the elastic membrane structure is constructed based on unsteady Reynolds-averaged Navier-Stokes (URANS) and a mass ...
Shi-Long Xing   +3 more
doaj   +1 more source

Multipoint high-fidelity CFD-based aerodynamic shape optimization of a 10 MW wind turbine [PDF]

open access: yesWind Energy Science, 2019
The wind energy industry relies heavily on computational fluid dynamics (CFD) to analyze new turbine designs. To utilize CFD earlier in the design process, where lower-fidelity methods such as blade element momentum (BEM) are more common, requires the
M. H. Aa. Madsen   +3 more
doaj   +1 more source

Side force control on slender body by self-excited oscillation flag

open access: yesTheoretical and Applied Mechanics Letters, 2016
Strong asymmetrical vortices appear on the leeward of slender body at high angles of attack, which has very unfavorable effect on the stability and control of the aircraft. A method is developed to control the side force of slender body at high angles of
Jian Zhai   +5 more
doaj   +1 more source

Optimization of a Twistable Hovering Flapping Wing Inspired by Giant Hummingbirds Using the Unsteady Blade Element Theory

open access: yesApplied Sciences, 2023
Due to the complexity of tailoring the wing flexibility and selecting favorable kinematics, the design of flapping wings is a considerably challenging problem.
Yuanbo Dong   +3 more
doaj   +1 more source

Numerical Investigation of Performance Enhancement of the S809 Airfoil and Phase VI Wind Turbine Blade Using Co-Flow Jet Technology

open access: yesEnergies, 2021
Making full use of wind energy can effectively alleviate the global energy shortage and environment contamination problems. Nevertheless, how to significantly improve the performance of the wind turbine airfoil and blade is a crucial issue.
Shunlei Zhang, Xudong Yang, Bifeng Song
doaj   +1 more source

Review of the Co-flow Jet Flow Control Method

open access: yesHangkong gongcheng jinzhan, 2022
The co-flow jet(CFJ)is a new concept flow control method based on blowing and suction technology.Since it was proposed,it has gradually attracted extensive attention.This paper reviews the basic principles,concepts,research methods and progress of CFJ ...
XU Heyong, MA Chengyu
doaj   +1 more source

Application of surrogate models to stability analysis and transition prediction in hypersonic flows

open access: yesAdvances in Aerodynamics, 2022
To increase the efficiency and robustness of stability-based transition prediction in flow simulations, simplified methods are introduced to substitute direct stability analyses for rapid disturbance growth prediction.
Han Nie   +4 more
doaj   +1 more source

Aeolian Towers: Designing Aerodynamics

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract Acknowledging the necessity of designing structures that comply with environmental factors, the main objective of the current project is the morphological investigation of a sustainable dual-tower complex. Considering the force of wind as a basic design parameter, the importance of every design decision is evaluated by ...
S Vergopoulos   +3 more
openaire   +1 more source

State-of-the-art in aerodynamic shape optimisation methods [PDF]

open access: yes, 2018
Aerodynamic optimisation has become an indispensable component for any aerodynamic design over the past 60 years, with applications to aircraft, cars, trains, bridges, wind turbines, internal pipe flows, and cavities, among others, and is thus relevant ...
Skinner, S.N., Zare-Behtash, H.
core   +1 more source

Investigation of propeller slipstream effects on lateral and directional static stability of transport aircraft

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
The aerodynamic characteristics of turboprop aircraft are greatly affected by the running propellers. In this paper, propeller slipstream effects on the static lateral-directional stability characteristics of a typical twin-engine turboprop aircraft with
Shuai Zhao   +4 more
doaj   +1 more source

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