Analyzing the Impact of the Diameter of Return-flowing Valve on Flow Field in Magnetically-driven Pump
GAO Zhenjun
LI Hao
LIU Jianrui
DUAN Fuyi
SU Huashan
CHANG Hao
Abstract：The effects of the diameter of return-flowing valve onflow field and hydraulic characteristics in mag-netic pump were numerically studied in this paper. We examined three diameters:6mm, 8mm and 10mm.The in-ternal flow, temperature and pressure distributionsin the pump were numerically simulated under both steady an unsteady conditions with consideration of heat-fluid coupling. The results showed that the change in return-flow-ing valve diameter had only a minor impact on lift height and efficiency of the pump as well as the flow field, al-though the lift height and efficiency decreased with the increase in the diameter. Under cooling condition, howev-er, a change in the return-flowing valve diameter could significantly impact flow and temperature fields, as well as pressure fluctuation in the pump. With increase in the diameter, the kinetic energy distribution and cooling effi-ciency increased, while the pressure distribution decreased. In addition, the diameter of the return-flowing valve had little effect on pressure fluctuation intensity of cooling circulation fluid, but it had a great effect on the release velocity of pressure fluctuation in cooling circulation fluid. Overall, the changes of reflowing valve had a great ef-fect on the flow characteristic of cooling circulation fluid, and have minimal effect on the flow characteristic of magnetic drive pump.
Keywords：magnetic drive pumpreflowing valvenumerical simulationinternal flow characteristicspressure fluctuationcoupled flow and temperature
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：9( 70-78 )