Turbulence Properties of Continuous Phase in Agitated Gas–Liquid–Solid Systems

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Zhengming Gao¹  Junyuan Mo¹  Xiongbin Huang¹  Yuyun Bao¹ 

[1] State Key Laboratory of Chemical Resource Engineering, School of Chemical Engineering, Beijing University of Chemical Technology

关键词: Gas–Liquid–Solid;    PIV;    Mean Velocity;    Turbulent Kinetic Energy;    Stirred Tank;   

DOI  :  10.1252/jcej.14we027

来源: Maruzen Company Ltd

【 摘 要 】

References(18)The present study investigates how solids affect the hydrodynamic characteristics in gas-liquid-solid flow in a cubic tank with a flat square base (length T=230 mm) using two-dimensional particle image velocimetry (PIV). The fluid was stirred by a half elliptical disk turbine (HEDT) of diameter D=77 mm. Flow fields at three different gas holdups (maximum 3.73%) were investigated, with the particle volumetric fraction up to 1.6%. The results show that the particles have a more significant influence on turbulent flow in solid–liquid two-phase flow and three-phase flow with 1.42% gas holdup than in the three-phase flow with 3.73% gas holdup. In multi-phase flow, the velocity of continuous phase is greatly influenced by the concentration of dispersed phase, but is rarely influenced by its density. However, the turbulent kinetic energy is affected by both of them.

【 授权许可】

Unknown