Performance Differences of Electrical Submersible Pump under Variable Speed Schemes

Wang, H. L.; Hu, Q. X.; Yang, Yongfei; Wang, C.

doi:10.2507/ijsimm20-1-544

Cited by 27 publications

(20 citation statements)

References 27 publications

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“…A new type of small shaftless water jet propulsion was proposed by Su in 2018, which eliminated the transmission shaft, reduced the disturbance of the water jet speed field by the uneven inflow, improved the propulsion performance of the propeller, and increased the thrust [20]. The SST turbulent flow model was used by Andersen to simulate the performance of the axial water jet pump, which revealed the inner flow structure of the passage [7,21,22]. Aleksander applied several turbulent models in the research of rotor-stator interaction in rim driven thrusters, and the SST model was found to have high relevance with experimental results, and was also more robust for solving low advance ratios [23].…”

Section: Introductionmentioning

confidence: 99%

Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet

Zhu

Liu

2021

Machines

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The pressure fluctuation characteristics of a rim driven propulsion pump are studied by an experimental method firstly, and then its unsteady inner flow is studied by numerical simulation to reveal the generating mechanism of the pressure fluctuation. In the experiment, a monitoring point was set in a downstream region with a distance of 1D (D, Diameter of impeller) to the impeller. The monitoring point’s dominant frequencies within a low frequency band are 1APF (APF, Axial Passing Frequency) and 2APF. In the numerical simulation, the main fluctuation near the impeller region appears at 1BPF (BPF, Blade Passing Frequency) and as the monitoring point moves downstream, the amplitude becomes smaller. The 1BPF fluctuation nearly disappears when the distance exceeds 1D, and the main frequency moves to 1APF and 2APF, which is in good agreement with the experimental results in the low frequency band. The transient velocity, pressure and vorticity distribution were studied to reveal the causes of 1BPF, 1APF and 2APF fluctuation. The main cause of 1BPF is the jet from the tail of the blade and the main cause of 2APF is the movement of a large-scale double vortex structure on both sides of the low-pressure zone. The movement of the vortex group near the wall may be the main cause that induces the 1APF fluctuation.

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Section: Introductionmentioning

confidence: 99%

Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet

Zhu

Liu

2021

Machines

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“…He et al [16] and Zhang et al [17] studied the numerical calculation method of the pump and gave the corresponding experimental results. Wang et al [18][19][20] studied the factors affecting pump performance through numerical calculations. Zhou et al [21,22] used the computational fluid dynamics method to analyze the water flow characteristics of the pump.…”

Section: Introductionmentioning

confidence: 99%

Influence of External Jet on Hydraulic Performance and Flow Field Characteristics of Water Jet Propulsion Pump Device

Cheng

Luo

et al. 2021

Shock and Vibration

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Water jet propulsion technology has broad application prospects in the field of ships, and water jet technology is a kind of high and new technology that is booming and has a wide range of applications. However, there are a few studies on the effect of the external jet on the performance of the water jet propulsion pump, and it is urgent to carry out this research. In this paper, the standard k-ε turbulence model is used to carry out the numerical simulation study of the influence of the external jet on the hydraulic performance and flow field characteristics of the water jet propulsion pump device. This paper discusses the selection of calculation models, the division of grids and the setting of turbulence models, and an in-depth analysis of the calculation results. The research results show that when a high-speed water jet enters a moving water body, it will cause turbulence in the moving water body. With the increase of jet flow, the turbulence phenomenon will be improved. The average velocity of the outlet section of the nozzle is consistent with the change of the total pressure. The average vortex gradually decreases, the turbulent kinetic energy changes little, the turbulence dissipation first decreases and then increases, and the nozzle axial force changes more and more. The axial force and thrust of the device will obviously increase when the two water streams merge and spray, and they will increase with the increase of the jet flow rate. By revealing the influence mechanism of the external jet on the water jet propulsion pump device, it can provide a theoretical basis and guiding direction for further optimizing the hydraulic performance of the entire device.

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“…In accordance with the contraction characteristic, the inlet passage can be generally divided into the contraction, elbow, and horizontal straight sections [1]. At present, the optimal design of pumps mainly uses theoretical modelling [2], numerical simulation [3,4] and experimental verification [5]. Moreover, numerical simulation and experimental verification can be combined to explore the influences of various parameters, such as inlet velocity ratio and ship speed, on the hydraulic performance of the inlet passage and the hydraulic loss of each section of the inlet passage under different flow quantities and to implement multi-objective optimization of this passage [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Inclined Pipe Section on the Performance of a Waterjet Propulsion Device

Chen¹,

Cao²,

Wang³

et al. 2021

Int. j. simul. model.

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A waterjet propulsion device is a new type of propulsion system whose inlet passage affects the performance of the entire device. To study the influence of the inlet passage with an inclined pipe section (IPS) on the hydrodynamic characteristics of the device, a numerical method was used to determine the influences of IPS's length L and rotational speed n on hydraulic performance and thrust characteristics. Results show that the head H of the device increases significantly from 3.29 m to 12.64 m as rotational speed n increases (700 r/min < n < 1300 r/min). Moreover, efficiency η increases from 61.37 % to 64.75 % and then decreases to 60.99 %. L exerts minimal effect on η, which reaches its maximum value when n = 900 r/min and L = 1.12 D (D is the outlet diameter of the inlet passage). Device thrust F gradually increases with an increase in n, and the increase rate continues to rise, while L has minimal effect on F. The results provide a reference for optimizing the inlet passage of a waterjet propulsion device.

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Performance Differences of Electrical Submersible Pump under Variable Speed Schemes

Cited by 27 publications

References 27 publications

Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet

Experimental Research and Numerical Analysis of Pressure Fluctuation Characteristics of Rim Driven Propulsion Pump Outlet

Influence of External Jet on Hydraulic Performance and Flow Field Characteristics of Water Jet Propulsion Pump Device

Influence of the Inclined Pipe Section on the Performance of a Waterjet Propulsion Device

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