Laboratory Wind Tunnel and Model Studies to Improve Gas Velocity Distribution in Cottrell Precipitators

Experiments on the vortex-shedding frequencies of various rectangular cylinders were conducted in a wind tunnel and in a water tank. The results show how Strouhal number varies with a width-to-height ratio of the cylinders in the range of Reynolds number between 70 and 2 × l04. There is found to exist a certain range of Reynolds number for the cylinders with the width-to-height ratios of 2 and 3 where flow pattern abruptly changes with a sudden discontinuity in Strouhal number. The changes in flow pattern corresponding to the discontinuity of Strouhal number have been confirmed by means of measurements of velocity distribution and flow visualization. These data are compared with those of other investigators. The experimental results have been found to show a good agreement with those of numerical calculations.

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The similarity requirements for wind tunnel model studies of gas diffusion

Wind Engineers JAWE ◽

10.5359/jawe.1994.59_23 ◽

1994 ◽

Vol 1994 (59) ◽

pp. 23-28 ◽

Cited By ~ 4

Author(s):

Akashi Mochida ◽

Shuzo Murakami ◽

Shinsuke Kato

Keyword(s):

Wind Tunnel ◽

Gas Diffusion ◽

Wind Tunnel Model ◽

Model Studies ◽

Tunnel Model

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Wind Tunnel Model Studies of Aerodynamic Lifting of Roof Pavers

Advances in Hurricane Engineering ◽

10.1061/9780784412626.043 ◽

2012 ◽

Cited By ~ 3

Author(s):

Peter Irwin ◽

Calin Dragoiescu ◽

Michael Cicci ◽

Greg Thompson

Keyword(s):

Wind Tunnel ◽

Wind Tunnel Model ◽

Model Studies ◽

Tunnel Model

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Experimental Study on Internal Flow Field of Wet Desulphurization Tower

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.354-355.137 ◽

2011 ◽

Vol 354-355 ◽

pp. 137-144

Author(s):

Jing Zhu ◽

Qi Xu ◽

Li Ping Zhang

Keyword(s):

Experimental Study ◽

Pressure Drop ◽

Velocity Distribution ◽

Flue Gas ◽

Velocity Ratio ◽

Internal Flow ◽

Liquid Droplets ◽

Gas Velocity ◽

Entrance Angle ◽

Inlet Angle

In order to study the flue gas velocity distribution and pressure drop characteristics inside wet desulfurization Tower, experimental study has been carried out. Flow model is built with geometric scale of 1 / 12 , flue gas velocity ratio of 1 / 1 and different gas entrance angle as 12°and 7°. Experiment result shows that Spray liquid droplets made gas more evenly; The evenness of gas velocity distribution is very poor with very low gas load (<35%);The pressure drop in tower increases with increase of sprayer and increases with increase of gas load; The evenness of gas velocity distribution becomes poor and the pressure drop increases when gas inlet angle changes from 12°to 7°.

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