AM06-21-011 CO_2噴流拡散場の速度・濃度結合統計量に関する研究(乱流熱物質移動(3),一般講演)

概要

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It is very important in engineeing to understand the diffusion mechanism of gas which density different from surrounding fluid. Here, we give attention to turbulent diffusion of CO_2 in the air, and try to build up the system of simultaneous measurements of velocity and concentration of CO_2 -air mixture. By using this system, the values of the instantaneous concentration and velocity can be determined from the output voltages of two bot-wire anemometers. The simultaneous measurements of CO_2 concentration and axial velocity were performed by using this system in case of the axisymmetric jet of CO_2 in the grid turbulence. It is found that pdf (probability density function) of the axial mass flux shows the positive skewness. As a whole the experimental results showed that profiles of turbulence statistics are consistent with the past other results.
日本流体力学会の論文
2006-09-05