摘要
针对扩建泵站工程进水建筑物内存在的偏流、漩涡等不良流态,工程往往采取布置导流墩的方法来优化流态,但其结构参数通常根据经验进行调整,难以达到最优效果。为了确定导流墩开孔的最佳结构参数,研究将导流墩的开孔长度、宽度、高度和间距作为设计变量,基于中心组合设计法进行试验方案设计,以轴向流速均匀度作为评价指标,构建响应面模型进行优化分析,确定了导流墩开孔的最佳参数组合。在最佳参数组合下进行数值模拟,发现实际值与响应面模型预测值误差仅为0.33%,轴向流速均匀度相较于原方案提升了11.17%,显著改善了前池流态。研究结果表明建立的响应面模型能够反应评价指标和设计变量的关系,并且可以将该方法应用到整流措施的结构参数优化中。
In view of the poor flow pattern such as bias flow and vortex in the inlet building of the expansion pump station project,the method of arranging diversion piers is adopted to optimize the flow pattern in the project,but its structural parameters are usually adjusted according to experience,which cannot easily achieve the optimal effect.In order to determine the optimal structural opening parameters of the diversion pier,this study uses the opening length,width,height and spacing of the diversion pier as design variables.The test scheme is designed based on the central composite design method.The axial velocity uniformity is used as the evaluation index.The response surface model is constructed for optimization analysis,and the optimal parameter combination for the opening of the diversion pier is determined.Numerical simulation is carried out under the optimal parameter combination.It is found that the error between the actual value and the predicted value of the response surface model is only 0.33%,and the axial velocity uniformity increases by 11.17%compared with the original scheme,which has significantly improved the flow pattern of the forebay.The results indicate that the established response surface model can reflect the relationship between the evaluation index and the design variables,and the method can be applied to the structural parameter optimization of the rectification measures.
作者
陈叶欣
奚斌
陈志刚
沈世煊
陈伟
邹燕
张雄伟
王欣昱
徐健
CHEN Ye-xin;XI Bin;CHEN Zhi-gang;SHEN Shi-xuan;CHEN Wei;ZOU Yan;ZHANG Xiong-wei;WANG Xin-yu;XU Jian(College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,Jiangsu Province,China;Water Project Management Division of the Jiangdu District of Jiangsu Province,Yangzhou 225200,Jiangsu Province,China;River and Lake Management Station of the Jinhu District,Huai’an 211600,Jiangsu Province,China)
出处
《中国农村水利水电》
北大核心
2024年第2期115-120,128,共7页
China Rural Water and Hydropower
基金
国家自然科学基金项目(51541912)
“十二五”国家科技支撑计划项目(2102BOD08B03-2)
江苏省研究生科研与实践创新计划项目(SJCX22_1760)。
关键词
扩建泵站
优化
导流墩
响应面法
数值模拟
extension of pumping station
optimization
diversion pier
response surface method
numerical simulation
