Numerical prediction of flow hydrodynamics of wet molecular sieve particles in a liquid-fluidized bed

作者：Liu, Guodong^*; Wang, Peng; Lu, Huilin; Yu, Fan; Zhang, Yanan; Wang, Shuai; Sun, Liyan

来源：Particuology, 2016, 25: 42-50.

DOI：10.1016/j.partic.2015.01.010

• Liquid-solid fluidized bed
• Wet particle collision
• Kinetic theory of granular flow
• Restitution coefficient

The Eulerian-Eulerian framework was used in the numerical simulation of liquid hydrodynamics and particle motion in liquid-fluidized beds. The kinetic theory of granular flow, which accounts for the viscous drag influence on the interstitial liquid phase, was used in combination with two-fluid models to simulate unsteady liquid-solid two-phase flows. We focus on local unsteady features predicted by the numerical models. The solid fraction power spectrum was analyzed. A typical flow pattern, such as core annular flow and particle back-mixing near the wall region of liquid-solid fluidized beds is obtained from this calculation. Effects of the restitution coefficient of particle-particle collisions on the distribution of granular pressure and temperature are discussed. Good agreement was achieved between the simulated results and experimental findings.

• 出版日期2016-4
• 单位哈尔滨工业大学