Virtual reconstruction and performance assessment of an eroded centrifugal pump impeller

Abstract

Emphasis is placed on the performance of a two-stage pump equipped with an eroded impeller. Non-contact reverse engineering technique is utilized to acquire the point data constituting the three-dimensional geometrical model of the eroded impeller. With computational fluid dynamics, both the operation performance of the pump and flow patterns adjacent to the eroded blade surface are obtained. For comparison, the corresponding undamaged impeller is investigated as well. Preferable fidelity of the approach of constructing geometrical model of the damaged impeller is substantiated. The mechanism underlying performance degradation of the pump with the eroded impeller is evidenced. Local flow patterns near the eroded area are featured by explicit irregularity. Furthermore, between the defective and the undamaged pumps, disparity in positions where cavitation occurs is negligible.

Keywords

Computer-assisted engineering pumps computational fluid dynamics flow characteristics cavitation

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References

Lee

Kang

Yang

. Novel forging technology of a magnesium alloy impeller with twisted blades of micro-thickness. CIRP Annals-Manuf Technol 2008; 57: 261–264.

Salcedo

Luis

León

. Manufacturing of nanostructured blades for a Francis turbine by isothermal forging of AA6063. J Manuf Sci Eng 2014; 136: 011009–011009.

Young

H-T

Chuang

L-C

. An integrated machining approach for a centrifugal impeller. Int J Adv Manuf Technol 2003; 21: 556–563.

Lai

X-D

Zhang

Q-H

LiQ-G . Digital manufacture of large-grade hydro turbine’s blades. J Mater Process Technol 2009; 209: 4963–4969.

Souza

Niven

McEvoy

. A numerical investigation of the constant-velocity volute design approach as applied to the single blade impeller pump. J Fluids Eng 2010; 132: 061103–061103.

Asuaje M, Bakir F, Tremante A, et al. 3D quasi-unsteady flow simulation in a centrifugal pump: comparison with the experimental results. In: Proceedings of 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, North Carolina, USA, 11–15 July 2004, paper no. HT-FED04-56600.

Dawes

Dhanasekaran

Demargne

AAJ

. Reducing bottlenecks in the CAD-to-mesh-to-solution cycle time to allow CFD to participate in design. J Turbomachinery 2001; 123: 552–557.

Gülich

. Centrifugal Pumps, 2nd ed. Berlin, Heidelberg: Springer-Verlag, 2010.

Srivastava

Roy

Kumar

. Design of a mixed flow pump impeller blade and its validation using stress analysis. Procedia Mater Sci 2014; 6: 417–424.

10.

Morioka

Tsuchiya

Shioya

. Influence of viscoelasticity on friction coefficient of abrasive wear for filler-dispersed polyamide. Wear 2015; 324–325: 17–26.

11.

Javidrad

Rahmati

. An integrated re-engineering plan for the manufacturing of aerospace components. Mater Des 2009; 30: 1524–1532.

12.

Chen

L-C

Lin

GCI

. Reverse engineering in the design of turbine blades–a case study in applying the MAMDP. Rob Comput Integr Manuf 2001; 16: 161–167.

13.

Holtzhausen S, Schreiber S, Schone Ch, et al. Highly accurate automated 3 d measuring and data conditioning for turbine and compressor blades. In: Proceedings of ASME Turbo Expo 2009: Power for Land, Sea, and Air, Florida, USA, 8–12 June 2009, paper no. Gt2009-59902.

14.

Kaszynski

Beck

Brown

. Uncertainties of an automated optical 3 d geometry measurement, modeling, and analysis process for mistuned integrally bladed rotor reverse engineering. J Eng Gas Turbines Power 2013; 135: 102504–102504.

15.

Gao

Folkes

Yilmaz

. Investigation of a 3D non-contact measurement based blade repair integration system. Aircr Eng Aerosp Technol 2005; 77: 34–41.

16.

ANSYS CFX-Solver Theory Guide, ANSYS Inc, 2009.

17.

Kang

. The effect of twin volutes on the flow and radial hydraulic force production in a submersible centrifugal pump. Proc IMechE, Part A: J Power and Energy 2015; 229: 221–237.

18.

Liu

Dou

H-S

. Numerical prediction and similarity study of pressure fluctuation in a prototype Kaplan turbine and the model turbine. Comput Fluids 2012; 56: 128–142.

19.

Bakir

Rey

Gerber

. Numerical and experimental investigations of the cavitating behavior of an inducer. Int J Rotating Mach 2004; 10: 15–25.

20.

Shukla SN and Kshirsagar J. Numerical prediction of cavitation in model pump. In: Proceedings of 2008 ASME International Mechanical Engineering Congress and Exposition, Boston, USA, 31 October–November 6, 2008, paper no. IMECE2008-66058.

21.

Nohmi M, Goto A, Iga Y, et al. Experimental and numerical study of cavitation breakdown in a centrifugal pump. In: Proceedings of ASME FESDM 2003, Hawaii, USA, 6–10 July 2003, paper no. FEDSM2003-45409.