AM05-14-007 T形合流管における高・低温流の乱流混合(乱流熱物質移動および反応流2,一般講演)

概要

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Turbulent thermal mixing in rectangular channels with a mixing T-junction, which simulate the mixing region in the HVAC unit for automobile air-conditioning system, was investigated experimentally. The Reynolds number and temperature of the main-channel flow were 2.5×10^4 and 12℃, respectively, and the velocity of the branching-channel flow (60℃) was set at the same value as that of the main channel. The flow characteristics and the mean temperature distributions after the flow meeting were measured by PIV and a thermocouple rake, respectively. Moreover, the simultaneous measurements of velocity and temperature were conducted using LDV and cold-wire thermometry. The distributions of the turbulent heat fluxes are made clear, and from the measured results the turbulent Prandtl number is calculated. Then, the mechanism of the turbulent thermal mixing is discussed based on the production of the turbulent heat fluxes.
日本流体力学会の論文
2005-09-05