排灌机械工程学报2013，Vol.31Issue(3)：225-229,5.DOI:10.3969/j.issn.1674-8530.2013.03.009
超低水头竖井贯流式水轮机转轮数值模拟优化
Numerical simulation and optimization of shaft tubular turbine runner with super-low head
摘要
Abstract
For a hydropower station in North Jiangsu province,a shaft tubular turbine with about 2 m super low head was developed to effectively make use of low head hydro resources.The three-dimensional,steady,turbulent flow in the flow passage of the turbine was numerically simulated by using the Navier-Stokes equations and the SIMPLEC algorithm,and the influences of vane section profile,runner diameter and stagger angle on the turbine performance were analyzed.Eventually,an optimal runner was specified by comparing the performance of different design cases.The results showed that after optimization the turbine with 1.75 m diameter and 23 ° stagger angle not only has met the design requirements by the hydro-power station but also exhibits the best efficiency and the highest output power.At the design point (head 2.1 m,flow rate 10 m3/s),the turbine efficiency is 87.6％.Based on the optimized turbine a model turbine GD-WS-35 was made and its performance was measured in laboratory.Under the design condition (flow rate 0.398 m3/s),the best efficiency of the model was 83.34％.By applying the scaling law of hydro-turbine,the peak efficiency of the prototype of this model will be 85.14％ at the flow rate of 9.96 m3/s.The CFD predicted peak efficiency is slightly higher than experimental one,suggesting the error is within ± 3 ％ range.关键词
竖井贯流式水轮机/超低水头/转轮/优化/数值模拟Key words
shaft tubular turbine / super low head / runner/ optimization / numerical simulation分类
农业科技引用本文复制引用
杨春霞,郑源,郑璐,李效旭,周大庆,李玲玉..超低水头竖井贯流式水轮机转轮数值模拟优化[J].排灌机械工程学报,2013,31(3):225-229,5.基金项目
国家海洋局海洋可再生能源专项资金资助项目(GHME2011CX02) （GHME2011CX02）
