The Axial Force Calculation and Experiment Investigation of Deep Well Pump Basing on Numerical Simulation

2010 ◽  
Author(s):  
Wei-dong Shi ◽  
Hong-liang Wang ◽  
Ling Zhou ◽  
Ping-ping Zou ◽  
Chuan Wang
Keyword(s):  
Numerical Simulation ◽  
Axial Force ◽  
Deep Well ◽  
Force Calculation

scholarly journals NUMERICAL CALCULATION AND EXPERIMENTAL STUDY OF AXIAL FORCE IN A DEEP-WELL CENTRIFUGAL PUMP

2014 ◽  
Vol 44 (1) ◽  
pp. 105-110
Author(s):  
L. ZHOU ◽  
W. D. SHI ◽  
L. BAI ◽  
W. G. LU ◽  
W. LI
Keyword(s):  
Numerical Simulation ◽  
Centrifugal Pump ◽  
Axial Force ◽  
Experimental Results ◽  
Centrifugal Impeller ◽  
Centrifugal Pumps ◽  
Deep Well ◽  
Multi Stage ◽  
Operation Process ◽  
Force Calculation

 In the operation process of centrifugal pumps, especially in multi-stage pumps, axial force is one of the main factors which affect the pump safety and reliability. This paper presents the axial force study in a deep-well centrifugal pump (DCP) with theoretical calculation, numerical simulation and experimental measure. Three different calculation formulas were respectively introduced and used in the model pump. The calculated results were compared and analyzed with the numerical simulation values and experimental results, and the detailed numerical simulation methods and experimental configuration were explained. Finally, the more accurate formula for calculating the axial force in oblique flow centrifugal impeller was selected out. At the rated flow point, the deviation of the axial force obtained by numerical simulation and the experimental value is approximately 3.8%, and the calculated result of selected formula only less than the experimental results of 2.6%. The results provide a theoretical basis for the axial force calculation in the centrifugal impeller design process.

Performance Predication and Axial Force Study on Deep-Well Centrifugal Pump

2011 ◽  
Vol 130-134 ◽  
pp. 711-714
Author(s):  
Ling Zhou ◽  
Wei Dong Shi ◽  
Wei Gang Lu ◽  
Hui Li
Keyword(s):  
Numerical Simulation ◽  
Centrifugal Pump ◽  
Axial Force ◽  
Simulation Method ◽  
Experimental Measurements ◽  
Centrifugal Pumps ◽  
Pump Performance ◽  
Deep Well ◽  
Multi Stage ◽  
Safety And Reliability

Axial force is one of the main factors which affect the pump safety and reliability during the operation of pumps, especially in multi-stage centrifugal pumps. 150QJ20 type deep-well centrifugal pump (DCP) is selected as an example to research the pump performance and axial force with the numerical simulation and experiment method. The numerical simulation results were compared with experimental measurements, and such result was analyzed. The results show that the change trend of the pump performance and axial force acquired by numerical and experiment is similar. At rated operating point, the error of axial force between the numerical simulation and experimental measurements is less than 3%. This confirmed the feasibility of predict the pump performance by numerical simulation method.

scholarly journals The Estimation and Experiment of Axial Force in Deep Well Pump Basing on Numerical Simulation

2010 ◽  
Vol 2 (2) ◽  
pp. 53-61 ◽  
Author(s):  
Wei-dong Shi ◽  
Hong-liang Wang ◽  
Ling Zhou ◽  
Ping-ping Zou ◽  
Chuan Wang
Keyword(s):  
Numerical Simulation ◽  
Axial Force ◽  
Deep Well

Numerical Simulation and Experimental Study on Deep-Well Centrifugal Pump with Small Rear Shroud Diameter

2011 ◽  
Vol 354-355 ◽  
pp. 659-663
Author(s):  
Wei Dong Shi ◽  
Ling Zhou ◽  
Wei Gang Lu ◽  
Hui Li
Keyword(s):  
Numerical Simulation ◽  
Centrifugal Pump ◽  
Axial Force ◽  
Stokes Equations ◽  
Three Dimensional ◽  
Navier Stokes ◽  
Pump Impeller ◽  
Pump Performance ◽  
Deep Well ◽  
Static Pressure Distribution

Choose the appropriate rear shroud diameter of impeller could get relatively small axial force and high pump performance. In this paper, a deep-well centrifugal pump impeller with a small rear shroud was studied by simulation and test. Two stages deep well centrifugal pump was simulated by means of a commercial CFD software that solved the Navier-Stokes equations for three-dimensional steady flow. The flow field and the static pressure distribution in the impellers obtained by steady numerical simulation were analyzed. By manufacturing and testing, the test results was acquired, and then compared with the predicting data of the numerical simulation. Results show that trimming the rear shroud could reduce the axial force, but too small rear shroud diameter lead to pump performance decline.

Numerical Simulation of Deep-Well Injection in Geismar, Louisiana

Ground Water ◽  
1996 ◽  
Vol 34 (6) ◽  
pp. 989-1000
Author(s):  
Peikang Jin ◽  
Michael E. Barber ◽  
George C. Flowers
Keyword(s):  
Numerical Simulation ◽  
Deep Well ◽  
Deep Well Injection

scholarly journals Spectrum Analysis and Optimization of the Axial Magnetic Gear with Halbach Permanent Magnet Arrays

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 2003
Author(s):  
Fang Hu ◽  
Yilan Zhou ◽  
Hesong Cui ◽  
Xiao Liu
Keyword(s):  
Permanent Magnet ◽  
Axial Force ◽  
Spectrum Analysis ◽  
Parametric Analysis ◽  
Air Gap ◽  
Torque Density ◽  
Output Torque ◽  
Magnetic Gear ◽  
The Difference ◽  
Force Calculation

In order to study the contribution of each harmonic to the output torque and axial torque of the axial magnetic gear with Halbach permanent magnet arrays (HAMG), torque and axial force calculation formulas of the HAMG are proposed based on the air-gap flux density distribution of the HAMG. Because of the difference of the air-gap flux densities at different radii, two simplified torque and axial force calculation formulas are proposed and compared. To improve the torque capability of the HAMG, parametric analysis of eight dimensional parameters is firstly conducted. By parametric analysis, six parameters such as the inner radius have been found to have obvious impact on the output torque and output torque density of the HAMG. The optimization using Maxwell software is then executed for maximizing the output torque density of the HAMG. The output torque density of the optimized HAMG is improved from 78.1 kNm/m3 to 93.3 kNm/m3 with an increase of 19%. Furthermore, spectrum analysis is also presented to illustrate the significant output torque improvement based on the torque calculation formulas.

Analytical Computational Models for Relationship between Ultimate Bending Moment of Concrete Segments and Axial Force

2020 ◽  
Vol 853 ◽  
pp. 177-181
Author(s):  
Zhi Yun Wang ◽  
Shou Ju Li
Keyword(s):  
Numerical Simulation ◽  
Computational Model ◽  
Axial Force ◽  
Computational Models ◽  
Plane Deformation ◽  
Bending Moment ◽  
Analytical Models ◽  
Bending Moments ◽  
Axial Forces ◽  
Practical Engineering

Concrete segments are widely used to support soil and water loadings in shield-excavated tunnels. Concrete segments burden simultaneously to the loadings of bending moments and axial forces. Based on plane deformation assumption of material mechanics, in which plane section before bending remains plane after bending, ultimate bending moment model is proposed to compute ultimate bearing capacity of concrete segments. Ultimate bending moments of concrete segments computed by analytical models agree well with numerical simulation results by FEM. The accuracy of proposed analytical computational model for ultimate bending moment of concrete segments is numerically verified. The analytical computational model and numerical simulation for a practical engineering case indicate that the ultimate bending moment of concrete segments increases with increase of axial force on concrete segment in the case of large eccentricity compressive state.

scholarly journals Effect of Sting Geometry on Axial Force Calculation for the Space Launch System

2019 ◽  
Author(s):  
Christopher A. Eggert ◽  
Patrick R. Shea ◽  
Nalin A. Ratnayake ◽  
Steven E. Krist
Keyword(s):  
Axial Force ◽  
Space Launch ◽  
Force Calculation

Numerical and Experimental Study of Axial Force and Hydraulic Performance in a Deep-Well Centrifugal Pump With Different Impeller Rear Shroud Radius

2013 ◽  
Vol 135 (10) ◽  
Author(s):  
Ling Zhou ◽  
Weidong Shi ◽  
Wei Li ◽  
Ramesh Agarwal
Keyword(s):  
Centrifugal Pump ◽  
Axial Force ◽  
Stokes Equations ◽  
Three Dimensional ◽  
Hydraulic Performance ◽  
Navier Stokes ◽  
Computational Domain ◽  
Pump Performance ◽  
Deep Well ◽  
Static Pressure Distribution

A multistage deep-well centrifugal pump (DCP) with different impeller rear shroud radius have been investigated both numerically and experimentally under multiconditons, which aims at studying the influence of impeller rear shroud radius to the axial force and pump hydraulic performance. During this study, a two-stage DCP equipped with three different impellers was simulated employing the commercial computational fluid dynamics (CFD) software ANYSY-Fluent to solve the Navier-Stokes equations for three-dimensional steady flow. High-quality structured grids were meshed on the whole computational domain. Test results were acquired by prototype experiments, and then compared with the predicted pump performance and axial force. The static pressure distribution in the pump passage obtained by numerical simulation was analyzed. The results indicated that the appropriate impeller rear shroud radius could improve the pump performance and lower the axial force significantly.

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