用激光多普勒测速仪对两种混合条件下振荡网格絮凝器中的流体运动进行了定量研究。对单分散、双峰和三峰乳胶悬浮液进行了间歇絮凝试验。研究了混合强度、颗粒电荷和悬浮液浓度对粒径分布变化率的影响。实验结果表明，大涡对絮凝相对不重要，絮凝是由与颗粒大小大致相同的涡引起的。开发了一种估算水流中不同大小漩涡中速度梯度的方法，并将其纳入现有的絮凝数学模型中。 将修正后的絮凝模型的预测结果与实验结果进行了比较，结果表明，漩涡的速度梯度充分描述了絮凝过程中混合产生的颗粒间接触。包括21个参考文献、表格和图表。

Fluid motion in an oscillating-grid flocculator was investigated quantitatively with a laser Doppler velocimeter for two mixing conditions. Batch flocculation experiments were performed for monodisperse, bimodal, and trimodal latex suspensions. The effects of mixing intensity, particle charge, and suspension concentration on the rate of change in particle size distributions were studied. Experimental results indicated that large eddies are relatively unimportant for flocculation and that flocculation is induced by eddies of approximately the same size as the particles. A method for estimating the velocity gradients in eddies of different sizes in the flow was developed and incorporated into an existing mathematical model for flocculation. The predictions of the revised flocculation model were compared with the experimental results and indicated that the velocity gradients of the eddies adequately describe the interparticle contacts resulting from mixing during flocculation. Includes 21 references, table, figures.