"635" reservoir is a spillway of many curved segments .In order to fully reveal the influence of installing di-version pier and roughness section and other auxiliary energy dissipation and water flow piloting measures on the water flow of curved spillway ,through standard k- εmodel and VOF multiphase flow method a three-dimensional mathematical model was developed and the distribution law of the depth of water and the flow speed of each typical cross section of spillway were derived .The comparison between the numerical modeling and the model tests showed that the numerical model can accurately simulate the water flow pattern of the spillway after installing auxiliary measures .The results sug-gested that under the influence of diversion pier and roughness section and other auxiliary energy dissipation and water flow piloting measures ,the water flow of spillway can effectively control the occurrence of water circulation of carved sec-tion and shorten the adjustment distance of longitudinal flow velocity distribution .This research could provide reliable theoretical basis for the hydraulic design of multi-curved spillway .%"635"水库为多弯段溢洪道 ,为了充分体现加设导流墩糙条等辅助消能导流措施对多弯段溢洪道水流的影响 ,通过标准 k- ε模型和VOF多相流方法并建立三维数学模型 ,得到了溢洪道各典型断面流速大小以及水深的分布规律.数值模拟结果与模型试验结果对比表明 ,使用的数值模型能较精确地模拟加设辅助措施后溢洪道的水流流态.结果表明溢洪道水流由于受导流墩糙条等辅助消能导流措施的影响 ,能有效控制弯道环流的发生以及缩短纵向流速分布调整的距离.从而为多弯段溢洪道的水力设计提供可靠的理论依据.
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