scholarly journals Numerical Simulation of Air-Water Bubbly Flow in Axial Flow Pump Impeller

2009 ◽  
pp. 545-552 ◽  
Author(s):  
Minguan Yang ◽  
Xiaolian Wu ◽  
Can Kang
Keyword(s):  
Numerical Simulation ◽  
Bubbly Flow ◽  
Axial Flow ◽  
Pump Impeller ◽  
Axial Flow Pump ◽  
Flow Pump

scholarly journals Analysis of Centroid Trajectory Characteristics of Axial-Flow Pump Impeller Under Hydraulic Excitation

2021 ◽  
Vol 9 ◽  
Author(s):  
Xiaohui Duan ◽  
Fangpin Tang ◽  
Hao Xu ◽  
Jian Chen ◽  
Qun Lu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Theoretical Analysis ◽  
Field Test ◽  
Water Pressure ◽  
Axial Flow ◽  
Pump Unit ◽  
Pump Impeller ◽  
Time Frequency ◽  
Axial Flow Pump ◽  
Flow Pump

The hydraulic excitation characteristics of axial flow pump unit are studied through theoretical analysis, numerical simulation and field test in this paper. The correlation between impeller hydraulic and radial vibration displacement of impeller centroid is obtained through theoretical analysis. Through the 1-way fluid-solid-interaction (FSI) numerical simulation, the distributions of water pressure and displacement on the impeller surface are obtained, and the time-domain and frequency-domain characteristics of transient hydraulic and radial displacement are revealed. Through the field test, the external characteristics of axial flow pump unit and the time-frequency characteristics of the pressure pulsation at the measuring points beside the inlet of the impeller are obtained. The comparisons between simulation results and experimental results show that the former is accurate and reliable.

scholarly journals Study on the Performance Improvement of Axial Flow Pump’s Saddle Zone by Using a Double Inlet Nozzle

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1493
Author(s):  
Weidong Cao ◽  
Wei Li
Keyword(s):  
Flow Rate ◽  
Three Dimensional ◽  
Axial Flow ◽  
Rotating Stall ◽  
Stable Operation ◽  
Inlet Section ◽  
Pump Impeller ◽  
Rate Condition ◽  
Axial Flow Pump ◽  
Flow Pump

The operating range of axial flow pumps is often constrained by the onset of rotating stall. An improved method using a double inlet nozzle to stabilize the performance curve is presented in the current study; a single inlet nozzle and three kinds of double inlet nozzle with different rib gap widths at the inlet of axial flow pump impeller were designed. Three dimensional (3D) incompressible flow fields were simulated, and the distributions of turbulence kinetic energy and velocity at different flow rates located at the inlet section, as well as the pressure and streamline in the impeller, were obtained at the same time. The single inlet nozzle scheme and a double inlet nozzle scheme were studied; the experimental and numerical performance results show that although the cross section is partly blocked in the double inlet nozzle, the head and efficiency do not decline at stable operation flow rate. On small flow rate condition, the double inlet nozzle scheme effectively stabilized the head-flow performance, whereby the block induced by the backflow before the impeller was markedly improved by using a double inlet nozzle. It has also been found that the rib gap width impacts the efficiency curve of the axial flow pump.

Numerical Simulation of Unsteady Flow in a Submersible Axial Flow Pump

2013 ◽  
Vol 444-445 ◽  
pp. 486-489
Author(s):  
Xiao Xu Zhang ◽  
Hong Ming Zhang ◽  
Xiao Ping Li
Keyword(s):  
Numerical Simulation ◽  
Unsteady Flow ◽  
Turbulence Model ◽  
Axial Flow ◽  
Simple Algorithm ◽  
Flow Rule ◽  
Cfd Analysis ◽  
Flow Passage ◽  
Axial Flow Pump ◽  
Flow Pump

To make the submersible axial flow pump have better performance, it is very significant to know about the flowing distributions. Based on N-S equations and Standard turbulence model and SIMPLE algorithm, a CFD analysis was made of the full flow passage in this type of pump. The study result shows the flow rule and will provide a guide for the designing and the producing practice.

Numerical simulation of water flow in an axial flow pump with adjustable guide vanes

2010 ◽  
Vol 24 (4) ◽  
pp. 971-976 ◽  
Author(s):  
Zhongdong Qian ◽  
Yan Wang ◽  
Wenxin Huai ◽  
Youngho Lee
Keyword(s):  
Numerical Simulation ◽  
Water Flow ◽  
Axial Flow ◽  
Guide Vanes ◽  
Axial Flow Pump ◽  
Flow Pump

scholarly journals Numerical simulation optimization of axial flow pump device for elbow inlet channel

2019 ◽  
Vol 240 ◽  
pp. 032006
Author(s):  
Chuanliu Xie ◽  
Fangping Tang ◽  
Fan Yang ◽  
Wenpeng Zhang ◽  
Jiren Zhou ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Simulation Optimization ◽  
Axial Flow ◽  
Inlet Channel ◽  
Axial Flow Pump ◽  
Flow Pump
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