到目前为止，大多数为混凝过程开发的模型都是基于经验关系或基于数据获取解释的随机方法。由于系统的复杂性，可以使用节点确定模型。这项工作是基于在罐式试验容器中对絮体粒度分布和局部流体动力学的实验分析。在这项研究中，pH值以及混凝剂的类型和剂量都是固定的。通过对实验数据的统计分析，确定了絮体粒度分布的时间演化。它引出了凝聚动力学的基本信息。速度场的统计分析可以确定平均速度场和平均速度半径的大小。 然而，考虑瞬时速度场和相关的瞬时速度梯度是有趣的。本文给出的结果是更一般性研究的第一个结果。它强调了絮体的特征尺寸与湍流的局部耗散率之间的密切关系，湍流的局部耗散率也可以用速度梯度表示。包括8个参考文献、表格、图表。

Up to now, most of the models developed for the coagulation-flocculation processhave been based on empirical relationships or based on stochastic approaches fordata acquisition interpretation. Due to the complexity of the system, nodeterministic models are available. This work is based on experimental analysisof both floc size distribution and local hydrodynamics in a jar test vessel. Inthe study, pH and both the type and dose of coagulant were fixed. The temporalevolution of the floc size distributions were determined from a statisticalanalysis of the experimental data. It leads to basic information on agglomerationkinetics. The statistical analysis of the velocity field enables thedetermination of the mean velocity field and the magnitude of the mean velocitygradients. However, it is interesting to consider instantaneous velocity fieldsand the associated instantaneous velocity gradients. The results presented hereare the very first results of a more general study. It highlights the closerelationship between the characteristic size of the flocs and the local dissipationrate of turbulence that can also be expressed in terms of velocity gradient. Includes 8 references, table, figures.