Results 271 to 280 of about 85,424 (309)
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1998
The intention of wind-tunnel experiments (or in general physical modelling, including water-tank experiments) is to reproduce the characteristics of the atmospheric boundary layer on a small geometric scale, typically between 1/100th and 1/1000th of the real world. In the previous chapters, numerical models were grouped into different classes depending
Michael Schatzmann +2 more
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The intention of wind-tunnel experiments (or in general physical modelling, including water-tank experiments) is to reproduce the characteristics of the atmospheric boundary layer on a small geometric scale, typically between 1/100th and 1/1000th of the real world. In the previous chapters, numerical models were grouped into different classes depending
Michael Schatzmann +2 more
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ExVis and wind tunnel experiment data
IEEE Computer Graphics and Applications, 1998Visualization 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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A Numerical Wind Tunnel Experiment
2002In 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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A probe manipulator for wind tunnel experiments
Measurement Science and Technology, 1994This paper describes the development of a seven-axis probe manipulator which is now in service in a wind tunnel facility at the National Taiwan Institute of Technology. The manipulator is composed of commercially available components, and is controlled by an IBM PC based servomotor controller that implements a robust control algorithm. A precision, non-
T F Hu, Y Y Hsu
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Wind Tunnel Experiment for Low Wind Speed Wind Turbine Blade
Applied Mechanics and Materials, 2011Environment and green energy awareness are two main factors why this study has been carried out. This research is focused on aerodynamics study for airfoil structure modification based on NACA 0044 and NACA 0063 by using wind tunnel experiment. Aerodynamic characteristics such as lift coefficient, CL, drag coefficient, CD, lift to drag ratio and cell ...
Mohd Noh Mohd Hafiz +4 more
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Wind Tunnel Experiments with Rotating Disks
2016Investigating 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 on dune sands
Earth Surface Processes and Landforms, 1981AbstractThe 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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EXPERIMENTS WITH A SUPERSONIC TUBE WIND-TUNNEL
1970Abstract : An experimental study was performed of the unsteady processes in the starting period of a supersonic Ludwieg tube, a device which operates like an intermittent supersonic wind tunnel. A quick opening diaphragm located downstream of the nozzle initiates the flow. Pressure and density measurements are made in a variety of ways in Mach number 1.
null Dominic +2 more
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