摘要
为研究辫状河道水流运动规律,应用计算流体力学Fluent软件,基于Realizable κ-ε湍流模型及水气二相流流体体积函数法(VOF)模型,建立了辫状水槽水流的三维数学模型,模拟了辫状水槽4种工况下不同尺寸的流场分布,并对比分析了数值结果与实测资料。结果表明,数值模拟能较好地反映流场分布规律;支槽分离区的尺寸与支槽宽度、水深位置及支槽中间沙岛长宽比相关。
In order to study the law of flow in braided channel, based on the Realizable κ-ε turbulence model and VOF model, CFD software Fluent is applied to establish 3D mathematical model of braided channel flow. Flow field distribu tion of braided channel is simuhted under four operating conditions with different sizes. Comparison of numerical simula- tion results and experimental data, the results show that numerical simulation can properly reflect the laws of flow field distribution; the size of separation zone in branch channel is related to its width, depth and mid-bar＇s ratio of length to width.
出处
《水电能源科学》
北大核心
2012年第3期93-96,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(51179069)
