期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：240
期号：3
页码：1-8
DOI：10.1088/1755-1315/240/3/032032
出版社：IOP Publishing
摘要：An improved diversion-cone is designed to suppress subsurface vortices in pump intake. In experiment, the influences of size and location of the improved diversion-cone on the subsurface vortices in pump intake were studied. Experiments were conducted in a rectangle intake and 12 operating points were carried out, and the vortex frequency and vortex location were also measured. The results show that the new improved diversion-cone employed in the experiments has obviously positive effect in suppressing the generation of subsurface vortices. It is also found that the lower distance between the pump bell and the improved diversion-cone, the more frequency of free surface vortices occurred.
