粘性细颗粒泥沙静水絮凝沉降生长的计算机模拟  

Computer simulation of flocculation growth for cohesive sediment in still water

作　　者：杨铁笙[1] 李富根[1] 梁朝皇[1] 

机构地区：[1]清华大学水利水电工程系河流海洋研究所,北京100084

出　　处：《泥沙研究》2005年第4期14-20,共7页Journal of Sediment Research

基　　金：国家自然科学基金资助课题(50179016)

摘　　要：利用分形生长模型对粘性细颗粒泥沙的絮凝沉降过程进行了计算机模拟,在扩散受限的絮团聚集模型(DLCA模型)的基础上,初步研究了粘性细颗粒泥沙的絮凝沉降分形生长过程,并对最终的絮凝体进行了图像处理,得到了分形维数和颗粒浓度的关系。Using the fractal concept, the growth of cohesive sediment was simulated by computer. The fractal growth and flocculation-sedimentation process of cohesive sediment was researched by Diffusion Limited Cluster Aggregation （DLCA） model. The fractal structure was analyzed by graphic technology, and the variation relationship between fractal dimension and sediment volume fraction was finally achieved.

关 键 词：粘性细颗粒泥沙 絮凝沉降 DLCA 分形维数 计算机模拟 

分 类 号：TV142.1[水利工程—水力学及河流动力学]