Modeling liquid-side particulate fouling in enhanced tubes
Modeling liquid-side particulate fouling in enhanced tubes
复制标题
DOI：
10.1016/0017-9310(94)90129-5
复制
发表时间：
1994-03
影响因子：
5.2
通讯作者：
L. Chamra;R. Webb
中科院分区：
文献类型：
--
作者：
L. Chamra;R. Webb
建立了预测强化管内液体侧颗粒污垢的半理论模型。该模型预测了各种颗粒尺寸分布和污垢浓度范围内的污垢行为。在本研究中，沉积模型使用了一个系数KD，它包括两个效应：(A)粘附区的布朗扩散和(B)粘附区的动量转移。粘结概率和粘结强度因子由经验关联式定义为颗粒尺寸、浓度和剪切力的函数。关联式中使用的污垢数据取2，4和16μm颗粒的浓度范围为2000~800ppm，管内平均流体速度在1.22~2.44ms−1之间变化。理论预测与实验数据基本一致。
A semi-theoretical model is developed to predict liquid-side particulate fouling in enhanced tubes. The model predicts fouling behavior for a wide range of particle size distribution and foulant concentration. In this study, the deposition model uses a coefficient, K D, which includes two effects,(a) Brownian diffusion in the sticking (or wall) region and (b) momentum transfer to the sticking region. The sticking probability and bond strength factor are defined by empirical correlations as a function of particle size, concentration, and shear stress. The fouling data used in the correlations were taken for concentrations between 2000 and 800 ppm for the particle sizes of 2, 4 and 16 μm. The average fluid velocity in the tube was varied between 1.22 and 2.44 ms− 1. The theoretical predictions are in general in good agreement with the experimental data.