AM05-14-006 対向形T字合流部における乱流混合機構(乱流熱物質移動および反応流2,一般講演)

概要

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We investigated experimentally the turbulent mixing characteristics in a counter-type T-junction. The T-junction was modeled by a mixing tee with square cross sections, in which the mixing channel was connected with the main and counter channels at right angles. Experiments were conducted keeping temperature and Reynolds number at 25℃, 3.5×10^3. Velocity ratio of counter-channel flow to main-channel one was changed from 1.0 to 5.0. Fluorescent dye was mixed in the main channel flow and simultaneous measurements of velocity and concentration in the channel were conducted by using PIV and LIF. Due to the large longitudinal vortices formed in the mixing channel, the recirculation bubble has three-dimensional structures. The mean concentration field is also largely related to the vortices. In this channel configuration, the transverse component of turbulent mass flux dominates the mass transport.
日本流体力学会の論文
2005-09-05