近海与河口粘性泥沙输移过程——第六届INTERCOH 2000综述

第六届近海与河口粘性泥沙输移过程国际学术会议主要包括以下内容 :1)粘性泥沙与湍流的相互作用 ;2 )淤泥动力特性的现场观测 ;3)粘性泥沙输移过程的数值模拟 ;4 )絮凝作用和絮凝团沉降速率 ;5 )淤泥底床侵蚀、固结过程。主要进展表现在 :1)分形理论被应用于粘性泥沙运动 ;2 )水声学技术、PIV技术的应用 ;3)原位剪应力测量装置 (ISIS)被应用于测量淤泥表面、床体上的侵蚀剪应力分布 ;4 )生物对粘性泥沙运动影响的研究 ,即利用环形水槽实验等 ,探讨异养细菌、超细胞聚合体对粘性泥沙稳定作用的影响 ;5 )一种健壮、有效的适应有限元数学模型 ,考虑絮凝、非牛顿流及高浓度下的湍流耗散 ,被用来解决粘性泥沙的输移问题。

Nearshore and Estuarine Cohesive Sediment Transport Processes——An Overview of the 6th INTERCOH 2000

Themes of the 6 th International Conference on Nearshore and Estuarine Cohesive Sediment Transport Processes include:1)interactions between cohesive sediment and turbulence:2)in situ observations of mud dynamics;3)numerical modeling of cohesive sediment transport processes;4)flocculation and settling velocities of mud flocs;and 5)erosion and deposition of mud bed.Main progresses are as follows:1)application of fractural theory;2)applications of underwater and particle image velocity (PIV)techniques;3)application of Instrument for Measuring Shear Stress In Situ (ISIS) to measure surface erosion shear stress and erosion shear stress profiles on mud beds;4) biological effect on cohesive sediment transport;and 5) application of a robust and effective finite element mathematical model to predict cohesive sediment transport processes.