21413 プッシュプル完全局排方式における平面噴流の乱流構造(せん断流の計測,OS.4 流れの計測と制御)

抄録

Mean velocity profiles and turbulence intensity were measured in turbulent plane air jet in a Push-Pull ventilation apparatus. Under the speed of jet is constant, we consider how mean velocity distribution and turbulence intensity distribution will change between jet nozzle and exhaust hood with experiment. Furthermore, we consider how plane air jet will be influenced by exhaust speed. When the influence caused by the exhaust speed is seen, (U_1/u^^-_m)^2 is decreased and the locus of the half-velocity points are increased.