水利水电技术2017，Vol.48Issue(7)：79-84,6.DOI:10.13928/j.cnki.wrahe.2017.07.014
侧向进水泵站流态模拟及改善研究
Numerical simulation of side-intake flow for fluid meliorating of pumping stations
摘要
Abstract
In order to solve the problem of large-range vortex within the fore bay and the suction sump of side inlet pumping station,numerical calculationsare made on both the fore bay and the suction sump with the software of ANSYS CFX based on the Reynolds-averaged Navier-Stokes equations for 3-D incompressible fluid and RNG k-ε turbulence model by taking a specific pumping station as the engineering basis,for which the selected flow patterns of the cross-sections for both the fore bay and the suction sump are analyzed with qualitative method,while the axial velocity uniformity on the characteristic line of the selected longitudinal section inside of the suction sump is analyzed with quantitative method as well.It is found out through the streamline chart of the numerical calculation that water flows into the suction sump with the flow pattern of oblique crossing for the original scheme,and then large-range back flow zones are there at the right side-walls from No.2 to No.5 suction sumps of the side inlet pumping station.Through the numerical calculations made for several flow regulation measure schemes,the flow regulation measure of combining guide-wall with verticalcolumn is adopted,so as to improve the undesirable flow pattern of the water intake structure for the original side inlet pumping station.Compared with the original scheme,the large-range back flow zones inside of both the fore bay and the suction sump disappear.After the flow regulation,the axial velocity uniformity on the characteristic line of the longitudinal section inside of the suction sump is generally increased by 18.15％ on average with the maximum increase of 27.82％.The study result provides a reference for improving the flow pattern of side inlet pumping station.关键词
泵站/侧向进水/前池/进水池/流态Key words
side inlet pumping station/fore bay/suction sump/flow pattern分类
建筑与水利引用本文复制引用
赵浩儒,杨帆,刘超,陈世杰,何继业..侧向进水泵站流态模拟及改善研究[J].水利水电技术,2017,48(7):79-84,6.基金项目
“十二五”国家科技支撑计划项目(2015BAD20B01-02) （2015BAD20B01-02）
国家自然科学基金资助项目(51609210) （51609210）
江苏省自然科学基金资助项目(BK20150457) （BK20150457）
江苏省研究生科技创新计划项目(SJLX16_0596) （SJLX16_0596）
