Results 271 to 280 of about 84,875 (309)

A Numerical Wind Tunnel Experiment

2002
In this paper we study the possibility of generating homogeneous, isotropic turbulence by putting a grid in a channel flow. Several statistics are studied to assess the quality of the turbulence. Also, the effect of the inclusion of a contraction on the isotropy of the turbulence is considered.
M. Pourquie, C. Moulinec, A. van Dijk
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Seismic Wind Noise Experiments Using a Portable Wind Tunnel

Proceedings, 2014
As part of a wider investigation into the effect of wind on seismic sensor noise, we built a portable wind tunnel to conduct controlled seismic wind noise experiments. A portable wind tunnel offers not only similar fluid dynamics characteristics of the Earth’s boundary layer as wind tunnels located in laboratories without the mechanical noise ...
C. Barajas-Olalde, A. Jeffreys
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Wind tunnel experiments on dune sands

Earth Surface Processes and Landforms, 1981
AbstractThe effect of the dry bulk density, time and the presence of roughness elements at the surface on the wind erodibility of a dry dune sand (D50 = 230–250 μm) were evaluated in a laboratory study.There is no significant correlation between the dry bulk density of the dune sand and the corresponding deflation threshold.
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Wind Tunnel Experiments with Rotating Disks

2016
Investigating convective heat transfer from a rotating disk subjected to streams of air requires placing a heated disk apparatus in the test section of a wind tunnel. This approach was employed for the first time by Dennis et al. [1] in 1970. Although this general experimental approach is fairly straightforward, the performance of accurate measurements
Stefan aus der Wiesche, Christian Helcig
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Wind Tunnel Experiments with Anti-Icing Fluids

SAE Technical Paper Series, 2011
<div class="section abstract"><div class="htmlview paragraph">An experimental methodology for investigating the effects of anti-icing fluids is presented in this paper. A wing model was designed, fabricated, and instrumented for testing anti-icing fluids in a wind tunnel facility. In addition, a video capturing method was developed and used
Michael Papadakis, Paul Strong, See-Cheuk Wong   +2 more
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ExVis and wind tunnel experiment data

IEEE Computer Graphics and Applications, 1998
Visualization specialists and aeroscientists at NASA Ames collaborated in investigating how information technology can improve the aeronautical design process. The author discusses ExVis software tool created to support interactive display and analysis of data collected during wind tunnel experiments.
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Wind tunnel simulation experiment of mountain dunes

Journal of Arid Environments, 1999
Abstract Mountain dunes can be categorized as echo dunes, climbing dunes and falling dunes. Their formation, development and movement are relative to sand source, flowfield near the ground, angle of mountain slope and ground subsisted environment. Through field observation and wind tunnel simulation, this paper discusses the physical mechanisms at ...
Liu Xianwan, Li Sen, Shen Jianyou
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Wind tunnel apparatus for translational oscillation experiments

18th Aerospace Sciences Meeting, 1980
A full-model translational oscillation apparatus has been developed for the wind-tunnel determination, in a wide speed range, of all three moment derivatives due to translational acceleration. The apparatus can be employed, in principle, for both vertical and horizontal oscillation experiments and can be used, therefore, to obtain moment derivatives ...
K. ORLIK-RUCKEMANN, E. HANFF, C. ANSTEY
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3D Wind Tunnel Experiments

2021
Alberto Zasso, Alessandro Fontanella, Marco Belloli   +2 more
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Wind-tunnel experiment on dust dry deposition

AIP Conference Proceedings, 2013
The PDPA technique is applied in a wind-tunnel experiment on dust dry deposition. Dust deposition velocity is derived from the PDPA measurements over four different (water, wood, sand and tree) surfaces. A reliable dataset is obtained for the validation of dust deposition schemes. It is found that the deposition velocities for particles larger than 0.5
Jie Zhang, Yaping Shao, Ning Huang
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