ADVを用いた固液二相管流の乱流構造に関する実験的研究

抄録

Measurements of three dimensional velocities of solid-liquid upflow in a vertical pipe were made by using an acoustic doppler velocimeter (ADV). The neutral plastic particles with the density of 1. 047kg/cm³ and the diameters of 1. 4mm, 0. 66mm and 0. 33mm were transported in a vertical pipe of 19cm inner diameter. The concentration of particles in the flow ranged from about 0. 055% to 1. 564%. It was found that the turbulence intensity of fluid increases with the increase of concentration and diameter of particles and lager than that of clear water flow at the same flow condition; while at the case of particle diameter 0. 33mm and concentration 0. 385%, the turbulence intensity decreases than that of a clear water flow at the same conditions.