化学反応を伴う液相混合層内の混合と反応に及ぼすトリップワイヤおよび格子の効果(流体工学,流体機械)

概要

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The effects of trip wires and a round-rod grid on the reactive-diffusive mechanism in a liquid plane mixing layer with a chemical reaction were experimentally investigated. Instantaneous velocity and concentration were simultaneously measured using the combination of a laser-Doppler velocimeter and a laser-induced fluorescence method. The results show that turbulent mixing and chemical reaction are significantly promoted by installing trip wires and a grid. The amount of chemical product in the mixing layer with a grid is larger than that in the mixing layer with trip wires, despite the same turbulence level of the intensity in the vertical direction around the centerline of the test section in the two flows. The distributions of velocity and concentration statistics in the mixing layer with a grid are fairly symmetric, whereas they are asymmetric in the mixing layer with trip wires. In addition, self similarity is also observed in the mixing layer with a grid.
2004-04-25