Results 51 to 60 of about 21,475 (198)

Flow Characteristics and Parameter Influence of the Under-Expansion Jet on Circulation Control Airfoil

open access: yesEnergies, 2023
The enhancement in the jet pressure ratio and jet velocity contributes to expanding the control efficiency and control boundary of circulation control airfoil under high subsonic incoming flow. However, because of an excessive jet pressure ratio, the jet
Meng He, Liu Zhang, Chang Li, Lei Zhao
doaj   +1 more source

Numerical Simulations of Vertical Discrete Gusts Driven by Trailing Edge Blowing

open access: yesInternational Journal of Aerospace Engineering, 2023
A new type of gust generator generates the airflow oscillation in the wind tunnel through the Coanda effect of the unsteady trailing edge blowing, which has been shown to have strong potential for accurately simulating discrete gusts.
Yang Shi   +5 more
doaj   +1 more source

Investigation of Microstructure and Density of Atmospheric Ice Formed by High-Wind-Speed In-Cloud Icing

open access: yesCrystals, 2023
In-cloud icing occurred on cables, wind turbines, and aircraft wings and may cause power transmission paralysis, energy dissipation, and unsafe flight.
Ruidi Liu, Yu Liu, Qiang Wang, Xian Yi
doaj   +1 more source

Transonic Static Aeroelastic Numerical Analysis of Flexible Complex Configuration Wing

open access: yesShock and Vibration, 2021
Diamond back wing is subjected to large deformation while gliding, which significantly changes characteristics of the lift as well as the static stability.
Changrong Zhang   +4 more
doaj   +1 more source

Numerical Simulation of Unsteady Fluid Parameters for Maglev Flight Wind Tunnel Design

open access: yesAerospace, 2022
The maglev flight tunnel is a novel conceptual aerodynamics test facility, in which the complicated aerodynamic characteristics caused by the high-speed translation of a moving model in a long, straight, closed tunnel, and wave propagation and aero ...
Cheng Fu   +5 more
doaj   +1 more source

Multi-Fidelity Aerodynamic Data Fusion with a Deep Neural Network Modeling Method

open access: yesEntropy, 2020
To generate more high-quality aerodynamic data using the information provided by different fidelity data, where low-fidelity aerodynamic data provides the trend information and high-fidelity aerodynamic data provides value information, we applied a deep ...
Lei He, Weiqi Qian, Tun Zhao, Qing Wang
doaj   +1 more source

Research on Aerodynamic Characteristics of Low-speed AerodynamicConfiguration of BWB Analog with and without Ducted Fan

open access: yesHangkong gongcheng jinzhan, 2018
With the development of aviation aircraft, the research on new aerodynamic configuration design has become the focus of power country in aviation. The actuator disk model applied in ducted fan based on self-developed “TRIsonic Platform”(TRIP 3.0) is ...
Yang Xiaochuan   +4 more
doaj   +1 more source

Numerical Aerodynamics at DLR

open access: yesChinese Journal of Aeronautics, 2006
AbstractSome years ago the national CFD project MEGAFLOW was initiated in Germany to combine many of the CFD development activities from DLR, universities and aircraft industry. Its goal was the development and validation of a dependable and efficient numerical tool for the aerodynamic simulation of complete aircraft which met the requirements of ...
Rossow, Cord-Christian   +2 more
openaire   +3 more sources

Reverse Offload Programming on Heterogeneous Systems

open access: yesIEEE Access, 2019
To achieve high computation throughput, heterogeneous architectures utilize many special-purpose cores to work as floating point computing coprocessors. Popular programming models typically offload computing intensive operations to coprocessors and then ...
Cheng Chen   +6 more
doaj   +1 more source

Aerodynamics of the hovering hummingbird

open access: yesNature, 2005
Despite profound musculoskeletal differences, hummingbirds (Trochilidae) are widely thought to employ aerodynamic mechanisms similar to those used by insects. The kinematic symmetry of the hummingbird upstroke and downstroke has led to the assumption that these halves of the wingbeat cycle contribute equally to weight support during hovering, as ...
Warrick, Douglas R   +2 more
openaire   +3 more sources

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