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Experimental Study of Passive Control Method of Pipeline Cavity Flow
HUANG You;OUYANG Hua;WU Ya-dong;TIAN Jie;DU Zhao-hui
2012, 32 (4):
46-50.
DOI: 10.3969/j.issn.1006-1355.2012.04.0011
Experiments were carried out in order to investigate the rectangular cavity flow of length-to-depth ratio of 5:1 using time-resolved particle image velocimetry (TR-PIV) technique. Three different passive control methods, including cylinder, sawtooth and rectangle body, were studied experimentally, having the same upstream velocity, i.e. 34 m/s. The experimental results show that the cylinder control method can increase shear layer thickness and effectively reduce the shear layer speed pulse and vorticity. Rectangle and sawtooth control methods will obviously raise shear layer to mainstream area, leading to no frontal impinging between the shear layer and the trailing edge of the cavity edge.
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