非定常流下Wells涡轮机准静态分析方法研究  

STUDY ON QUASI-STATIC ANALYSIS METHOD OF WELLS TURBINE UNDER UNSTEADY FLOW

作　　者：高扬[1,2] 余杨[1,2] 余建星[1,2] 李振眠 吴晨 徐立新[1,2] Gao Yang;Yu Yang;Yu Jianxing;Li Zhenmian;Wu Chen;Xu Lixin(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin 300072,China;Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University Tianjin 300072,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大学,天津300072 [2]天津市港口与海洋工程重点实验室天津大学,天津300072

出　　处：《太阳能学报》2022年第1期213-218,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金面上项目(51779173);广西科技重大专项(桂科AA17292007)。

摘　　要：以Wells涡轮机为研究对象,通过求解RANS方程和Spalart-Allmaras模型实现数值仿真模拟,研究非定常流下Wells涡轮机的准静态分析方法。通过网格独立性分析和已有文献对比,验证计算模型的准确性。计算并对比定常流、振荡流和往复流工况中Wells涡轮的性能,结果显示非定常流下Wells涡轮机会发生迟滞现象。通过振荡流和往复流的流动频率影响分析,说明非定常流下Wells涡轮机准静态分析方法的可行性和局限性:准静态分析对于较低流动频率的非定常流工况准确性较高,但对于较高流动频率误差较大。Taking Wells turbine as the research object,numerical simulation was achieved by solving the RANS equation and the Spallart-Allmaras model,and the quasi-static analysis method of Wells turbine under unsteady flow was studied.The accuracy of the computational model is verified by the grid independence analysis and comparison with the existing literature.The performance of Wells turbines under steady flow,oscillating flow and reciprocating flow conditions is calculated and compared.The results show that the chance of Wells turbines lagging under unsteady flow.The feasibility and limitations of the quasi-static analysis method for Wells turbines under unsteady flow are illustrated through the analysis of the influence of the flow frequency of the oscillating and reciprocating flows.Quasi-static analysis is more accurate for unsteady flow conditions at lower flow frequencies,but for higher flow frequencies the error is greater.

关 键 词：波浪能 涡轮机 CFD 非定常流 WELLS 准静态分析方法 迟滞现象 

分 类 号：TK14[动力工程及工程热物理—热能工程]