528 反応性における乱れ制御に関する研究(流体工学III)

概要

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An experimental study was carried out for the chemically reacting jet using the Laser Induced Fluorescent (LIF) technique. For the experiment, a nozzle with inner diameter of 2mm was settled at the center of channel with 100mm square. The ammonia solution jet reacted with acetic acid solution in the ambient flow channel. To visualize the momentum difiusion, rhodamine B was dissolved into the jet fluid, which was illuminated the Nd:YAG pulse laser. To evaluate the reacting jet mixing, the Gaussian fitting technique has been applied for the intensity distribution of the LIF image. ln the water jet into water case, the diffusion was confirmed to be the well-known tubulent jet diffusion. However, in the reacting jet case, i.e., ammonia solution jet into acetic add solution, the momentum diffusion was clearly suppressed. The suppression of the mixing was considered to be caused by the reaction itself.
2001-03-09