摘要
消力池的优化设计一直是水利工程领域的热点课题.为此基于三维CFD数值计算和响应面优化方法,对某水库工程的消力池进行了优化设计.根据响应面法,建立了以消能率和工程经济函数为优化目标,跌坎深度和消力池池长为优化变量的优化模型.研究结果表明:跌坎深度和消力池池长对消能率和工程经济函数影响显著.最优参数组合为跌坎深度7.07m、消力池池长70.0m.优化后的消力池方案在考虑工程造价的基础上消力池内水流流态得到显著改善,消力池消能率得到提升.在优化设计体型下,消力池消能率62.68%,最大出池流速5.27m/s.相比变量区间内消能率最差的体型,在工程经济函数提高17.60%的情况下,消能率提高了20.88%;相比变量区间内的工程量最大的体型,节省30.78%的工程量,消能率仅降低了6.91%.
The optimal design of stilling basin has always been a hot topic in the field of hydraulic engineering.The design of stilling basin of a reservoir project was optimized based on the three-dimensional CFD numerical calculation and response surface optimization method.According to the response surface method,an optimization model was established with the energy dissipation rate and the engineering economic function as the optimization objectives,and the depth of the drop sill and the length of the stilling basin as the optimization variables.The results showed that the depth of the drop sill and the length of the stilling basin have significant influence on the energy dissipation rate and the engineering economic function.The optimal combination of parameters is 7.07M depth of drop sill and 70.0m length of stilling basin.Considering the cost of the project,the flow pattern in the stilling basin is improved significantly,and the dissipation rate of stilling basin is improved.Under the optimized design,the energy dissipation rate of stilling basin is 62.68%,and the maximum flow velocity of stilling basin is 5.27m/s.Compared with the shape with the worst energy dissipation rate in the variable interval,the energy dissipation rate is increased by 20.88%when the engineering economic function is increased by 17.60%;compared with the shape with the largest quantity in the variable interval,the energy dissipation rate is only reduced by 6.91%by saving 30.78%.
作者
任昱
刁明军
蒋雷
孙浩淼
黄桂兵
REN Yu;DIAO Ming-jun;JIANG Lei;SUN Hao-miao;HUANG Gui-bing(State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China)
出处
《西南民族大学学报（自然科学版）》
CAS
2020年第2期202-208,共7页
Journal of Southwest Minzu University(Natural Science Edition)
基金
四川省学术和技术带头人培养基金(2012DTY020)。
关键词
优化设计
消力池
CFD
响应面法
optimal design
stilling basin
CFD
response surface optimization
