用片状模型研究旋转填充床中黏性流体微观混合过程

以碘化物-碘酸盐（Dushman-Villermaux）作为测试体系，采用片状模型计算了黏性流体在RPB内的微观混合效率，通过量纲分析法得出旋转填充床内能量耗散率的计算式，并将实验结果与模拟结果进行对比。结果表明，随黏度增大离集指数增大，随体积流量或转速提高离集指数下降，且计算结果与实验结果吻合良好，RPB内能量耗散率表达式为 ε=0.0044ω^3.09R′_″^0.48q_l^0.23(1/ν)^0.16。

Micro-mixing of viscous fluid in rotating packed bed using slab model

This paper reports a method of simulating the micro-mixing efficiency of a viscous fluid in a rotating packed bed (RPB) using the slab model and the Dushman-Villermaux testing system, and obtains calculated expressions of the energy dissipation rate that are appropriate for a RPB through dimensional analytic methods. A good agreement was found between simulated and experimental results. The micro-mixing efficiency was found to improve with increasing rotational speed or liquid flow rate and with decreasing media viscosity. The expression for the energy dissipation rate ε in a RPB can be written as ε=0.0044ω^3.09R′_″^0.48q_l^0.23(1/ν)^0.16, where ω is the angular velocity, R′_″ is the characteristic dimension of the rotor, q_l is the volume flow rate and ν is the dynamic viscosity.