外文翻譯---基于內(nèi)流場的數(shù)值模擬的磁力驅(qū)動泵在不同轉(zhuǎn)速下的性能研究

1、英文原文Performance Study Based on Inner Flow Field Numerical Simulationof Magnetic Drive Pumps with Different Rotate SpeedsAbstract: Magnetic drive pump has gotten great achievement and has been widely used in some special

2、fields. Currently, the researcheson magnetic drive pump have focused on hydraulic design, bearing, axial force in China, and a new magnetic drive pump with low flowand high head have been developed overseas. However, low

3、 efficiency and large size are the common disadvantages for the magneticdrive pump. In order to study the performance of high-speed magnetic drive pump, FLUENT was used to simulate the inner flow fieldof magnetic drive p

4、umps with different rotate speeds, and get velocity and pressure distributions of inner flow field. According toanalysis the changes of velocity and pressure to ensure the stable operation of pump and avoid cavitation. B

5、ased on the analysis ofvelocity and pressure, this paper presents the pump efficiency of magnetic drive pumps with different rotated speeds by calculating thepower loss in impeller and volute, hydraulic loss, volumetric

6、loss, mechanical loss and discussing the different reasons of power lossbetween the magnetic drive pumps with different rotated speeds. In addition, the magnetic drive pumps were tested in a closed testingsystem. Pressur

7、e sensors were set in inlet and outlet of magnetic drive pumps to get the pressure and the head。 The results of simulation and test were similar,which shows that the method of simulation is feasible. The proposed researc

8、h provides the instruction to design high-speed magneticdrive pump.Key words: magnetic drive pump, simulation, power loss, pump efficiency.1.IntroductionMagnetic drive pumps are currently used in petrol andchemical indus

9、tries to pump toxic, explosive, corrosive andexpensive fluid. High-speed magnetic drive pump will havean extensive prospect with the application of frequencyconversion the different power losses. Then magnetic drive pump

10、s with different rotated speeds are tested, and the results show the method of simulation is feasible and provides instruction to design high-speed magnetic drive pump.2.Parameters and StructureThe design parameters are

11、listed on Table 1 and thestructure is shown in Fig.1.3.Simulation of Inner Flow Field3.1 Control equationsThe fluid in magnetic drive pump is governed by physical conservation laws. It must meet mass conservation, moment