弯道水流运动及床面变形数值模拟研究进展  

Development of Study on Numerical Simulation of Meandering River Flow and Bed Deformation

作　　者：戴文鸿 苗伟波[2] 高嵩 张松[4] 房树财 

机构地区：[1]水文水资源与水利工程科学国家重点实验室,南京210098 [2]河海大学水利水电学院,南京210098 [3]河海大学水资源高效利用与工程安全国家工程研究中心,南京210098 [4]扬州市勘测设计研究院有限公司,江苏扬州225007 [5]云南大唐国际李仙江流域水电开发有限公司,云南普洱665000

出　　处：《南水北调与水利科技》2014年第3期121-126,共6页South-to-North Water Transfers and Water Science & Technology

基　　金：江苏省自然科学基金(基础研究计划)面上项目(BK2012808);中央高校科研基金项目(2009B02214);江苏高校优势学科建设工程项目(YS11001)

摘　　要：弯曲河道中的水流运动和床面变形较顺直河道更为复杂,是河流动力学研究的热点之一。近年来,随着计算机软硬件的迅速发展和高效数值计算方法的出现,弯道水沙运动在数值模拟方面得到不断发展。系统梳理了国内外在弯曲河道的水流特性(水面横比降、横向环流、纵向垂线平均流速、床面剪切力等)、泥沙运动基本特性方面的研究,以及弯道水流二维、三维数值水流模型和河床演变模型研究进展,指出了目前弯曲河道水沙运动数值模拟中存在的问题,并对其今后可能的研究方向提出了建议。River flow and bed deformation in meandering streams are more complex than those in straight rivers,which is one of the main subjects in river dynamics.In recent years,with the rapid development of computer hardware and software and the appearance of efficient numerical methods as well,numerical simulation of meandering river flow and sediment transport develops with greater progress.This paper summarized the properties of meandering flow,such as the lateral slope of water surface,transverse circulation,average velocity along vertical line,and bed shear stress,and the basic characteristics of sediment transport.In addition,the research progress on the two-dimensional and three-dimensional flow models and bed evolution models in meandering streams were reviewed.The exiting problems of current numerical simulation on meandering river flow and sediment transport were pointed out and some possible solutions for future research in meandering river flow and bed deformation were proposed.

关 键 词：弯曲河道 水流运动 床面变形 数值模拟 

分 类 号：TV131.3[水利工程—水力学及河流动力学]