Maritime works often require sediment handling activities such as dredging and disposal, to maintain harbors and channels, nourish sandy beaches as well as to carefully remove and relocate contaminated materials from the bottom of estuarine and coastal areas. Such operations often lead to an increase in the concentration of suspended sediments in water columns, which in turn causes adverse effects on water quality and aquatic lives. Minimizing these detrimental impacts require designing such maritime works with care, by paying attention to the geometry of areas affected by the sediment resuspension. Numerical modeling has been recognized as a valuable tool to help designers and contractors to optimize such sediment handling works. In obtaining such, one of the most challenging aspects to be tackled is the estimation of the settling velocity of the fine-grained mixture that results from sediment resuspension. These settling velocities are affected by a phenomenon known as flocculation. In this paper, the concept of non-local interacting particles was used to formulate a one-dimensional model for the flocculation phenomenon. Also, a (deterministic) particle transport equation was formulated to reproduce the settling behavior of suspended sediments in a settling column. The proposed model was solved numerically. The simulation results provide an understanding of the mechanisms of flocculation and highlight how flocculation influences floccule-settling velocities and concentration percentages of sediments that remain in suspension.

海上工程通常需要进行诸如疏handling和处置之类的泥沙处理活动，以维护港口和航道，滋养沙滩，以及小心地从河口和沿海地区的底部清除和重新安置受污染的物质。此类操作通常会导致水柱中悬浮沉积物的浓度增加，进而对水质和水生生物造成不利影响。要最大程度地减少这些不利影响，需要精心设计此类海事工程，方法是注意受沉积物重悬影响的区域的几何形状。数值建模已被认为是帮助设计师和承包商优化此类泥沙处理工作的宝贵工具。在获得这样的东西时，要解决的最具挑战性的方面之一是估算因沉积物重悬而产生的细颗粒混合物的沉降速度。这些沉降速度受称为絮凝现象的影响。在本文中，非局部相互作用粒子的概念被用来为絮凝现象建立一维模型。此外，制定了（确定性的）颗粒传输方程式，以再现沉降塔中悬浮沉积物的沉降行为。对提出的模型进行了数值求解。模拟结果提供了对絮凝机理的理解，并突出了絮凝如何影响絮凝沉降速度和悬浮物中沉积物的浓度百分比。这些沉降速度受称为絮凝现象的影响。在本文中，非局部相互作用粒子的概念被用来为絮凝现象建立一维模型。此外，制定了（确定性的）颗粒传输方程式，以再现沉降塔中悬浮沉积物的沉降行为。对提出的模型进行了数值求解。模拟结果提供了对絮凝机理的理解，并突出了絮凝如何影响絮凝沉降速度和悬浮物中沉积物的浓度百分比。这些沉降速度受称为絮凝现象的影响。在本文中，非局部相互作用粒子的概念被用来为絮凝现象建立一维模型。此外，制定了（确定性的）颗粒传输方程式，以再现沉降塔中悬浮沉积物的沉降行为。对提出的模型进行了数值求解。模拟结果提供了对絮凝机理的理解，并突出了絮凝如何影响絮凝沉降速度和悬浮物中沉积物的浓度百分比。建立了一个（确定性的）颗粒传输方程，以再现沉降塔中悬浮沉积物的沉降行为。对提出的模型进行了数值求解。模拟结果提供了对絮凝机理的理解，并突出了絮凝如何影响絮凝沉降速度和悬浮物中沉积物的浓度百分比。建立了一个（确定性的）颗粒传输方程，以再现沉降塔中悬浮沉积物的沉降行为。对提出的模型进行了数值求解。模拟结果提供了对絮凝机理的理解，并突出了絮凝如何影响絮凝沉降速度和悬浮物中沉积物的浓度百分比。