Study on Dense Two-Phase Turbulent Flow of Bingham Fluid and Particles
Kang Liqiang¹，Zeng Zhuoxiong²，Jiang Peizheng¹
(1. School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China；2.Department of Mechanical Engineering，Nanchang Institute of Aeronautical Technology)

Abstract：Two-phase turbulent model of Bingham fluid and particles is presented according to dense liquid-solid two-phase turbulent equations and power law fluid constitutive equation. Computer program is developed, which provides theoretical basis for numerical computation. With inter phase slip algorithm revised（IPSAR）, numerical computation is performed for two-phase turbulent flow of Bingham fluid and particles in pipe. The results show that the velocity distribution of particle phase is flat, and higher near wall than the velocity of power law fluid， that the mainstream velocity of both phases increases along with increase of flow index, that the turbulent kinetic energy of power law fluid has a tendency to increase, and that the particle volume fraction appears a tendency to reduce. So yield stress has an important influence on turbulent flow.
Keywords：Bingham fluid；two-phase flow；yield stress