侧式进/出水口数值模拟湍流模型比较研究  

Comparative study on turbulence models for numerical simulation of lateral inlet/outlet

作　　者：高学平[1] 陈昊[1] 孙博闻[1] 朱洪涛[1] GAO Xueping;CHEN Hao;SUN Bowen;ZHU Hongtao(State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350

出　　处：《水利水电技术》2020年第11期109-116,共8页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金创新群体基金项目(51621092)。

摘　　要：为研究侧式进/出水口数值模拟中不同湍流模型的适应性,本文以清原抽水蓄能电站下水库侧式进/出水口单体为研究对象,采用标准k-ε、RSM、LES和DES四种湍流模型进行数值模拟,将各湍流模型对进/出水口水头损失系数、流速分布等水力特性的模拟效果和计算效率进行对比分析。研究发现,进流工况下四种湍流模型计算结果均与实测值吻合较好,计算收敛性较好;出流工况下标准k-ε模型计算结果与实测值偏差较大,其余三种模型计算结果与实测值较吻合。对于侧式进/出水口进流及出流工况,RSM模型的计算效率较高,LES等尺度解析模型的准确性较好。研究成果可为进一步提高侧式进/出水口计算精度提供参考。In order to study the adaptabilities of different turbulence models for the numerical simulation of lateral inlet/outlet,the monomer lateral inlet/outlet of the lower reservoir of Qingyuan Pumped Storage Hydropower Station is taken as the study object herein,while the standard k-ε,RSM,LES and DES turbulence models are adopted to carry out the relevant numerical simulations,and then the effects from all the turbulence models on the hydraulic characteristics of the head loss coefficients,velocity distributions,etc.at the inlet/outlet and the corresponding calculation efficiencies are compared and analyzed.The study result shows that the calculation results from all the four turbulence models are better coincided with the measured values for the working condition of water inflow with better calculation convergences,while a larger deviation is there between the calculation result from the standard k-εmodel and the measured value for the working condition of water outflow,but the calculation results from the other three models are relatively coincided with the measured values.So far as the water inflow and outflow working conditions of lateral inlet/outlet are concerned,the calculation efficiency of RSM model is relatively higher,while the accuracies of the LES and other scale analytical models are better.The study results given herein can provide the relevant references for further enhancing the calculation accuracy of lateral inlet/outlet.

关 键 词：抽水蓄能电站 侧式进/出水口 湍流模型 水力特性 计算效率 

分 类 号：TV131[水利工程—水力学及河流动力学]