Experimental study on effect of a new vortex control baffler and its influencing factor |
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Authors: | Zhi-hua Liu Ying Xiong Zhan-zhi Wang Song Wang Cheng-xu Tu |
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Institution: | b a Department of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China b China Jiliang University,Hangzhou 310018,China |
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Abstract: | The horseshoe vortex generated around the sail-body junction of submarine has an important influence on the non-uniformity
of submarine wake at propeller disc. The flow characteristics in the horseshoe vortex generated area are analyzed, and a new
method of vortex control baffler is presented. The influence of vortex control baffler on the flow field around submarine
main body with sail is numerically simulated. The wind tunnel experiment on submarine model is carried out, and it is proved
that the vortex control baffler can weaken the horseshoe vortex and decrease the non-uniformity of the wake at propeller disc.
It is shown from the experiment results that the effect of vortex control baffler depends on its installation position; with
a proper installation position, the non-uniform coefficient of submarine wake would be declined by about 50%; the Reynolds
number of submarine model has an influence on the effect of vortex control baffler too, and the higher the Reynolds number
is, the better the effect of the vortex control baffler is. |
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Keywords: | submarine vortex control baffler horseshoe vortex attached vortex wind tunnel experiment |
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