Performance enhancement of mixed flow submersible pump using CFD

2016 ◽  
pp. 347-351
Author(s):  
N Patel ◽  
S Jain ◽  
R Patel
Keyword(s):  
Performance Enhancement ◽  
Submersible Pump ◽  
Mixed Flow

CFD Analysis of Mixed Flow Submersible pump Impeller

2011 ◽  
Vol 1 (9) ◽  
pp. 97-100
Author(s):  
Mitul G Patel ◽  
◽  
Subhedar Dattatraya ◽  
Bharat J Patel
Keyword(s):  
Cfd Analysis ◽  
Submersible Pump ◽  
Mixed Flow ◽  
Pump Impeller

Experimental Study of Gas-Liquid Flow Through a Multi-Stage, Mixed-Flow Electric Submersible Pump

2018 ◽  
Author(s):  
Marine Dupoiron
Keyword(s):  
High Speed ◽  
Imaging Techniques ◽  
Flow Patterns ◽  
Low Flow ◽  
Submersible Pump ◽  
Mixed Flow ◽  
Flow Rates ◽  
Flow Through ◽  
Inlet Conditions ◽  
Electric Submersible Pump

Laser Doppler velocimetry (LDV) and high-speed imaging techniques were used in a transparent model of a fourstage, mixed-flow commercial electric submersible pump (ESP) to characterize the flow through a range of inlet gas volume fractions (GVF) from 0 to 30%. Measurements demonstrate the presence high turbulence levels in the wake of the impeller blades, and recirculation cells at low flow rates. In gas-liquid conditions, the bubble size varied within a pump stage, as break-up occurred at the impeller tip, and coalescence was dominant in the diffuser, especially at low flow rates because of recirculation. At moderate-to-high inlet GVF, the first impeller acted as a mixer and the flow patterns at the stage level alternated between bubbly and radially separated flows, as short gas slugs propagated through the stages. The flow patterns at the stage level did not depend on the pump inclination, but the inlet conditions did, with worse performance induced by slugging flows for the horizontal setup.

Performance Enhancement of an Electric Submersible Pump

2014 ◽  
Author(s):  
Rohit S. Adhav ◽  
Abdus Samad ◽  
Frank Kenyery
Keyword(s):  
Performance Enhancement ◽  
Objective Function Value ◽  
Optimal Designs ◽  
Navier Stokes ◽  
Hydraulic Efficiency ◽  
Submersible Pump ◽  
Navier Stokes Equation ◽  
Commercial Code ◽  
Reynolds Average ◽  
Electric Submersible Pump

A numerical analysis and optimization has been done for a single stage electric submersible pump (ESP) which is basically a centrifugal pump to retrofit into wellbore in groundwater pumping or oil pumping. The pump is designed and simulated using a commercial code. The objective was to improve the pump performance if the inlet and outlet angles of impeller and diffuser are modified. Hence, the variables were the blade angles and 15 different designs were produced via Latin hyper cube sampling within the variable ranges. The designs were evaluated to find the hydraulic efficiency or the objective function value using a Reynolds average Navier Stokes equation solver. Two surrogates were constructed from the CFD results and the optimal points were predicted. The optimal designs were again evaluated using CFD solver and further analyses were made. It was found that the efficiency was increased by 4.23%.

Mindful sport performance enhancement: Mental training for athletes and coaches.

2018 ◽  
Author(s):  
Keith A. Kaufman ◽  
Carol R. Glass ◽  
Timothy R. Pineau
Keyword(s):  
Performance Enhancement ◽  
Sport Performance ◽  
Mental Training

Performance Enhancement, Creativity and Mental Training

2003 ◽  
Author(s):  
M. Bar-Eli ◽  
O. Lowengart ◽  
J. Goldberg ◽  
S. Epstein ◽  
R. D. Fosbury
Keyword(s):  
Performance Enhancement ◽  
Mental Training

Effective performance improvement of organic thin film transistors with multi-layer modifications

2020 ◽  
Vol 91 (3) ◽  
pp. 30201
Author(s):  
Hang Yu ◽  
Jianlin Zhou ◽  
Yuanyuan Hao ◽  
Yao Ni
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Performance Enhancement ◽  
Organic Thin Film Transistors ◽  
Electrical Performance ◽  
Hole Injection ◽  
Organic Thin Film ◽  
Effective Performance ◽  
Significant Performance ◽  
P Type

Organic thin film transistors (OTFTs) based on dioctylbenzothienobenzothiophene (C8BTBT) and copper (Cu) electrodes were fabricated. For improving the electrical performance of the original devices, the different modifications were attempted to insert in three different positions including semiconductor/electrode interface, semiconductor bulk inside and semiconductor/insulator interface. In detail, 4,4′,4′′-tris[3-methylpheny(phenyl)amino] triphenylamine (m-MTDATA) was applied between C8BTBTand Cu electrodes as hole injection layer (HIL). Moreover, the fluorinated copper phthalo-cyanine (F16CuPc) was inserted in C8BTBT/SiO2 interface to form F16CuPc/C8BTBT heterojunction or C8BTBT bulk to form C8BTBT/F16CuPc/C8BTBT sandwich configuration. Our experiment shows that, the sandwich structured OTFTs have a significant performance enhancement when appropriate thickness modification is chosen, comparing with original C8BTBT devices. Then, even the low work function metal Cu was applied, a normal p-type operate-mode C8BTBT-OTFT with mobility as high as 2.56 cm2/Vs has been fabricated.

Performance enhancement of normal contact ratio gearing system through correction factor

2019 ◽  
Vol 13 (3) ◽  
pp. 5242-5258
Author(s):  
R. Ravivarman ◽  
K. Palaniradja ◽  
R. Prabhu Sekar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Correction Factor ◽  
Bending Strength ◽  
Performance Enhancement ◽  
Transmission Ratio ◽  
Contact Ratio ◽  
Element Analysis ◽  
Normal Contact ◽  
Root Region

As lined, higher transmission ratio drives system will have uneven stresses in the root region of the pinion and wheel. To enrich this agility of uneven stresses in normal-contact ratio (NCR) gearing system, an enhanced system is desirable to be industrialized. To attain this objective, it is proposed to put on the idea of modifying the correction factor in such a manner that the bending strength of the gearing system is improved. In this work, the correction factor is modified in such a way that the stress in the root region is equalized between the pinion and wheel. This equalization of stresses is carried out by providing a correction factor in three circumstances: in pinion; wheel and both the pinion and the wheel. Henceforth performances of this S+, S0 and S- drives are evaluated in finite element analysis (FEA) and compared for balanced root stresses in parallel shaft spur gearing systems. It is seen that the outcomes gained from the modified drive have enhanced performance than the standard drive.

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