Effect of the Position of Guide Vane on Hydraulic Performance of the S-shaped Extension Pumping System
WU Chenhui
TANG Fangping
SHI Lijian
XIE Chuanliu
ZHANG Wenpeng
Abstract：The influences of guide vane position on hydraulic performance of the S-shaped extension pumping system were studied in this paper numerically. We considered four positions and three flow conditions:designed flow (Q0), reduced flow (0.8Q0) and fast flow (1.2Q0). The results showed that with the relative position ofthe guide vane increasing, the efficiency and lifting height of the pump increased first before declining. The optimal relative distance between the guide vane and the impeller was 10 mm at which the energy loss in both the impel-ler body and the outlet passage was minimal, the pump efficiency and lift height peaked, and the guide vane was most effective in recovery of the kinetic energy. Under the reduced and designed flow rates, the average inlet vor-tex angle of the outlet passage and energy loss at the outlet passage decreased first before increasing. Under high flow rate, in contrast, the average vortex angle remained constant, independent of the relative position of the guide vane.
Keywords：S-shaped extension pumpguide vane positionnumericalhydraulic performance
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 63-69 )