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基于扩散受限絮团聚集模型(DLCA模型),将絮凝沉降模型和水动力学结合,从三维的角度对动水中粘性细颗粒的絮凝沉降过程进行了计算机模拟.在此基础上,分析了有效碰撞系数、泥沙初始浓度和粒径对均匀沙和非均匀沙的落淤距离与分布的影响,初步研究了粘性细颗粒泥沙的絮凝沉降分形生长过程,并对絮凝体进行了图像处理.研究成果对黄河等高浊度细颗粒含沙水流的治理与处理有一定的理论和实际应用价值.
Based on the diffusion-limited floc aggregation model (DLCA model), the flocculation-sedimentation model was combined with hydrodynamics to simulate the flocculation and sedimentation of viscous fine particles in moving water from a three-dimensional perspective.On the basis of this, Impact coefficient, sediment initial concentration and particle size on the distance and distribution of falling and sedimentation of uniform sand and non-uniform sand were studied. The flocculation and sedimentation fractal growth process of viscous fine sediment was preliminarily studied, and the flocculation body was image processed. The research results have certain theoretical and practical value for the treatment and treatment of the silt-laden flow of high-turbidity fine particles such as the Yellow River.