Results 21 to 30 of about 1,190 (227)

Dynamic Drag Reduction Effects of Aerospikes and Aerodisks

International Journal of Aerospace Engineering, 2021
In order to investigate the dynamic characteristics of blunt aircraft mounted with aerospikes and aerodisks in large-amplitude force-pitching, the Roe spatial scheme and the lower-upper symmetric Gauss-Seidel (LU-SGS) method with dual time step are ...
Rong Han, Wei Liu, Xiaoliang Yang, Xinghua Chang   +3 more
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Unsteady Aerodynamic Lift Force on a Pitching Wing: Experimental Measurement and Data Processing

Vibration, 2023
This work discusses the experimental challenges and processing of unsteady experiments for a pitching wing in the low-speed wind tunnel of the Vrije Universiteit Brussel. The setup used for unsteady experiments consisted of two independent devices: (a) a
Péter Zoltán Csurcsia, Muhammad Faheem Siddiqui, Mark Charles Runacres, Tim De Troyer   +3 more
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Fluid-structure interaction enhances the aerodynamic performance of flapping wings: a computational study

Journal of Biomechanical Science and Engineering, 2018
Insect wings change its shape passively by the aerodynamic and inertial forces when flapping, which can greatly affect its aerodynamic performances. In order to confirm the importance of the fluid-structure interaction in flapping wing aerodynamics, we ...
Toshiyuki NAKATA, Ryusuke NODA, Hao LIU
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UNAFLOW: a holistic wind tunnel experiment about the aerodynamic response of floating wind turbines under imposed surge motion [PDF]

Wind Energy Science, 2021
Floating offshore wind turbines are subjected to large motions due to the additional degrees of freedom of the floating foundation. The turbine rotor often operates in highly dynamic inflow conditions, and this has a significant effect on the overall ...
A. Fontanella, I. Bayati, R. Mikkelsen, M. Belloli, A. Zasso   +4 more
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Time scales of dynamic stall development on a vertical-axis wind turbine blade

Flow, 2023
Vertical-axis wind turbines are excellent candidates to diversify wind energy technology, but their aerodynamic complexity limits industrial deployment.
Sébastien Le Fouest, Daniel Fernex, Karen Mulleners   +2 more
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Characteristics of unsteady flow around a vehicle affecting its high-speed stability during a dynamic steering action

Nihon Kikai Gakkai ronbunshu, 2014
In order to clarify unsteady flow structure’s behavior that improves vehicle’s high-speed stability during steering input, on-road analysis was conducted.
Yoshihiro OKADA, Takahide NOUZAWA, Makoto TSUBOKURA, Takuji NAKASHIMA   +3 more
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Numerical investigation of the unsteady coupling airflow impact of a full-scale warship with a helicopter during shipboard landing

Engineering Applications of Computational Fluid Mechanics, 2020
In this paper, a comprehensive computational modeling study of the unsteady aerodynamic environment around a warship with a helicopter is performed.
Yu Lu, Xin Chang, Zhenju Chuang, Junhua Xing, Zecai Zhou, Xiuyuan Zhang   +5 more
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Research on the Aerodynamic Characteristics of an Ultrahigh-speed Elevator During the Staggering Process Between the Car and Counterweight [PDF]

Journal of Applied Fluid Mechanics
Investigating the aerodynamic characteristics of an ultrahigh-speed elevator between the car and counterweight during the staggering process is crucial for the development of drag reduction and noise abatement technologies.
B. Liu, J. C. Ma, J. Zhang, M. Z. Li, Z. X. Tian, M. M. Liu, H. Zhang, L. Xu   +7 more
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Aerodynamic damping and amplitude response of piezoelectric fans in free and confined space

Engineering Applications of Computational Fluid Mechanics, 2022
The main objective is to develop a predictive model to directly predict and describe the sensitivity of aerodynamic damping and amplitude response to the proximity of surrounding walls.
Na Li, Yang Liu, Jigang Gao, Zaixing Huang, Luoya Wang   +4 more
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An Unsteady Momentum Source Method and Its Application in Simulation of Hovering Rotor

Xibei Gongye Daxue Xuebao, 2020
The efficiency and accuracy of numerical simulation on power unit is the key to study the relevant aerodynamic layout with multiple rotating power units. However, the numerical simulation of the power unit using real geometry all faces the problem of low

doaj   +1 more source