螺带式搅拌器的功率消耗

对高粘度牛顿流体和非牛顿流体,在层流域测定了多种几何结构的螺带-锚搅拌器的功率消耗和Metzner常数K_(so)用回归分析方法,分别把Kp(N_p·Re)、K_(?)与搅拌器的几何参数和特性参数进行关联,得到:对底部没有锚的螺带搅拌器,由本实验和文献数据得到:结果还证实了螺带搅拌器的功率消耗与螺带高度不成正比.K_(?)与C_(3)进行关联是一种可行的方法.所得计算式能较准确地预测螺带式搅拌器在搅拌牛顿流体和非牛顿流体时的功率消耗和K_8值.

Agitation Power Consumption for Helical-Ribbon Impellers

Generalized power and Metzner constant Ks correlations for both combined helical-ribbon-anchor and helical-ribbon impellers in highly viscous Newtonian and non-Newtonian fluids and operating in the laminar regine are presented on the basis of regressive analysis of experimental data from this work as well as those from the literature. For combined helical-ribbon-anchor impellers the correlation iswhere for helical-ribbon impellersMoreover, it was confirmed from the results that power consumption for heli cal ribbon impellers is not directly proportional to the length of the impel-ler.