112 二次元噴流中の渦構造操作についての研究 : フィードバックの位相効果について
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概要
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The behaviour of vortices in a two-dimensional jet was investigated by the feedback excitation using the fluctuating of Vortical signal given phase-shift of the vortical structure. The experiment were carried out at exit velocity of 10m/sec and the Reynolds number is 1.42×(10)^4 based on the nozzle height. In this experiment, the excitation signal intensity u'/Ueo is fixed on 0.04. The power spectrum densities of the velocity fluctuation were measured along the jet center line. The result suggests the phase-shift of feedback excitation signal is the manipulation of vertical structures in a two-dimensional jet.
- 2002-10-05