Experimental study on relationship between turbulent intensity and active air intake in odor source searching

In this investigation an intensive experimental study was conducted to study the flow quality in a test section of a low speed, V∞ = 10–100, closed return wind tunnel. An interesting result was obtained when a trip strip, a guitar wire with D = 1.14mm, was installed near the end of the contraction region. Addition of this trip wire resulted in a turbulent reduction almost at all speed ranges along the entire test section. Further, it smoothness the variation of turbulent intensity along the test section too. Velocity profiles along the tunnel wall at various speeds using a rake were measured with and without the trip wire. In addition, pressure contours at different location of the test section was measured too.

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Experimental study of circle grid fractal pattern on turbulent intensity in pipe flow

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/50/1/012014 ◽

2013 ◽

Vol 50 ◽

pp. 012014 ◽

Cited By ~ 4

Author(s):

B Manshoor ◽

I Zaman ◽

M F Othman ◽

Amir Khalid

Keyword(s):

Experimental Study ◽

Pipe Flow ◽

Turbulent Intensity ◽

Fractal Pattern

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Experimental study on odor source localization system based on metal oxide gas sensors

2011 Third International Conference on Measuring Technology and Mechatronics Automation ◽

10.1109/icmtma.2011.5767266 ◽

2011 ◽

Cited By ~ 2

Author(s):

Chen Liwei ◽

Yang Jianhua ◽

Hafid Oussaadi

Keyword(s):

Experimental Study ◽

Metal Oxide ◽

Source Localization ◽

Gas Sensors ◽

Odor Source ◽

Localization System ◽

Metal Oxide Gas Sensors

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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