Results 21 to 30 of about 18,152 (313)

Experimental Research on Noise Reduction for Continuous Transonic Wind Tunnel Loop

open access: yesXibei Gongye Daxue Xuebao, 2020
The noise level of wind tunnel test section is respected as one of the most important performance specifications to represent the flow field quality, especially for large scale wind tunnel. According to the acoustic experimental research conducted in the

doaj   +1 more source

Application of Advanced CFD Tools for High Reynolds Number Testing. [PDF]

open access: yes, 2008
Numerical simulations of the DLR F11 high lift half model in landing configuration in the test section of the ETW wind tunnel have been carried out with the unstructured CFD code DLR TAU.
Wichmann, Georg   +3 more
core   +1 more source

Lift Interference in Wind Tunnels with Perforated and Solid Walls [PDF]

open access: yesINCAS Bulletin, 2021
In order to obtain accurate results in wind tunnel testing it is necessary to determine the effect of interaction between the flow around the model and the test section walls.
Mihaela MANEA, Adrian BURGHIU
doaj   +1 more source

Etude numérique et expérimentale de l'écoulement autour d'un rotor éolien [PDF]

open access: yes, 2013
An improved model of an actuator surface is proposed, representing the flow around a wind turbine. This model was developed in conjunction with a Navier-Stokes solver using a blade element method for the calculation of power and wake development.
MEMON, Asif   +2 more
core   +1 more source

Testing of calibration models in order to certify the overall reliability of the trisonic blowdown wind tunnel of VTI [PDF]

open access: yesFME Transactions, 2010
It is strongly recommended that wind tunnel calibrations become a regular part of the operational cycle for any wind tunnel. They facilitate tunnel-totunnel data comparisons. Standard calibration model, representing a generic winged missile configuration,
Damljanović Dijana, Rašuo Boško
doaj  

Contemporary frame of measurement and assessment of wind-tunnel flow quality in a low-speed facility [PDF]

open access: yesFME Transactions, 2018
The requirements for the accuracy of measurements in a wind tunnel test become more and more severe while the complexity of the test increases. In an environment of reduced time available for wind tunnel test and increasing test costs, it is important ...
Ocokoljić Goran   +3 more
doaj  

Wind tunnel test study on the influence of slat end size changes in transport aircraft

open access: yesHangkong gongcheng jinzhan
For conventional layout civil transport aircraft in a low-speed and high lift configuration, the premature of the stall angle of attack causes the aircraft's approach speed to be too high.
YAN Wei   +7 more
doaj   +1 more source

A New Method for Adjusting Setting Angle of Rotor Blade for Axial Fan in Wind Tunnel

open access: yesXibei Gongye Daxue Xuebao, 2019
Combining the fan aerodynamic efficiency with the wind tunnel pressure loss coefficient, a new equation which points out the inherent relationship of the fan blade setting angle, fan rotating speed and gas flow rate in wind tunnel circuit is derived ...

doaj   +1 more source

Acquisition of Swept Aerodynamic Data by the Consecutive Changing of Wing Model Configuration in a Wind Tunnel Test Using Remote Feedback Control

open access: yesAerospace, 2021
This study conducted wind tunnel tests with consecutive deflection angle changes on a three-dimensional (3D) wing with a control surface to procure aerodynamic data by sweeping the deflection angle. Configuration changes of a wind tunnel test model, such
Ken Wakimoto   +3 more
doaj   +1 more source

The Wind-tunnel Test and Unsteady CFD of an Ornithopter Formation [PDF]

open access: yes, 2017
According to Lissaman and Shollenberger’s article published in Science in 1970, birds fly in formation to reduce the overall energy expenditure for flight. Thus, this work adopted the same principle of flight formation to ornithopters to save energy. Two
Yang, Lung-Jieh
core   +1 more source

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