%0 Journal Article
%A LIU Dong
%A WANG Ben
%A HU Mei-cong
%T Effect of Arrangement of Dual-pressure Inlet on Vortex Properties
%D 2017
%R 10.11988/ckyyb.20160367
%J Journal of Yangtze River Scientific Research Institute
%P 48-53
%V 34
%N 7
%X The intake vortices of pressure inlets have destructive effect on hydraulic machinery and buildings. It is of practical significance to discuss the generation mechanism of vortex,  especially of intake vortex, to reveal the law of movement, and to seek effective measures to control the damage of vortex. Studies on the inlet vortices properties and influencing factors mainly focused on single-channel and single inlet water  rather than  vortex properties of double inlets or multiple  inlets. Submerged outflow of dual-pressure inlet is adopted to observe water flow field and vortex properties by changing the shape and arrangement of the inlet under different submergence depths. Results show that the duration time, frequency and intensity of intake vortex decrease with the increasing of relative submergence depth. In different submerged water depths, the diameter and intensity of  vertical vortex show a process of increasing first and then decreasing as the submergence depth increases. Increasing the distance between the inlets appropriately could  change the vortex type and reduce the duration and frequency of the intake vortex.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20160367