长江科学院院报2016，Vol.33Issue(6)：1-7,7.DOI:10.11988/ckyyb.20150183
插有缓变曲线弯道水流运动的三维数值模拟
Three-dimensional Numerical Simulation of the Flow Movement in Bend Inserted the Transition Curve
摘要
Abstract
The study on bend flow is important for the development of rivers, sediment protection and river evolu⁃tion. If the numerical simulation can be effectively used to reveal the law of flow and scouring and silting on bed surface, it will save a lot of manpower, money and time. In this study, two kinds of curves:slow⁃round⁃slow bend and symmetric convex curves, which can be introduced to decrease the impact force of the current and to prevent scouring along the river bed, dike and feet of the dike. Through the numerical analysis, some results can be conclu⁃ded:the ultra⁃high and horizontal surface slope of the slow⁃round⁃slow bend and symmetric convex curves are sig⁃nificantly reduced compared with the round bend;In addition to the corner imports, on cave bank, the bottom ve⁃locity of slow⁃round⁃slow bend and symmetric convex curves is less than that of the round bend, convex bank of im⁃ports and cornering near top cross⁃section, the flow velocity near bottom of these two bends is significantly smaller than that of the round one;The deep groove of these two inserted with graded curves is obviously shallower than that of the round bend from the figure of vertical and horizontal erosion and deposition on the bed surface.关键词
弯道/缓变曲线/环流/冲淤变形/三维数值模拟Key words
channel bend/transition curve/circulation/deformation of erosion and deposition/three-dimensional numerical simulation分类
建筑与水利引用本文复制引用
魏炳乾,严培,刘艳丽,刘瑞,刘枫彬,李强,杨明阳..插有缓变曲线弯道水流运动的三维数值模拟[J].长江科学院院报,2016,33(6):1-7,7.基金项目
国家自然科学基金项目（51479163）；陕西水利科技计划资助项目（2014skj－14）；陕西省教育厅科学研究计划项目 （）
