Abstract
In this study, the performance change of a double suction centrifugal pump (Q = 60 m3/min, H = 97 m) was analyzed using Computational fluid dynamics (CFD) to investigate the effects of internal surface roughness of pump components. The calculated performance of the pump using CFD is in strong agreement with the experimental results, which used a smooth wall case. In terms of the predicted total pump efficiency with the surface roughness case, the CFD results indicate that the pump efficiency is reduced by approximately 3.0 %. CFD results reveal that the most significant roughness effect on the pump components is that of the impeller, whereas the smallest effect is that of the inlet casing. Furthermore, the CFD results demonstrate that the pump performance is strongly dependent on the outward shroud surface roughness of the impeller.
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References
A. J. Stepanoff, Flow Pumps, John Wiley & Sons Inc. (1957) 193–203.
J.-E. Yun and J.-H. Kim, Effect of surface roughness on performance analysis of centrifugal pump for wastewater transport, Transactions of the Korean Society of Mechanical Engineers B, 38 (2014).
J. Y. Ryu, J. H. Kim and R. Campbell, Increase efficiency and reduce energy costs of pumps due to the coating, Journal of Fluid Machinery, 9 (1) (2006) 56–65.
S.-E. Lim, C.-H. Sohn and J.-Y. Ryu, Experimental study of energy-saving realized with the improvement of inner roughness in double-entry centrifugal pump, Trans. Korean Soc. Mech. Eng. B, 40 (6) (2016) 409–415.
ANSYS CFX-Solver theory guide (2013) Release 12.1.
J. Nikuradse, Law of flow in rough pipes, National Advisory Committee for Aeronautics, NACA TM 1292 (1950).
H. Schlichting, Boundary layer theory, 7th Editiion, McGraw-Hill, New York (1979).
V. T. Foster, Performance loss of modern steam turbine plant due to surface roughness, Proc. Instn. Mech. Engrs., 181 (1) (1967) 391–405.
F. M. White, Four types of pipe flow problems, Fluid Mechanics, Seventh Edition, McGraw-Hill, New York (2009) 376.
S. E. Haaland, Simple and explicit formulas for friction factor in turbulent pipe flow, J. Fluids Eng., March (1983) 89–90.
L. F. Moody, Friction factors for pipe flow, ASME Trans., 66 (1944) 671–684.
F. M. White, Viscosity and other secondary properties, Fluid mechanics, Seventh Edition, McGraw-Hill, New York (2009) 28–30.
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Recommended by Associate Editor Donghyun You
Sung Eun Lim received his M.Sc. in Mechanical Engineering from Kyoungpook National University in 2016. Mr. Lim has been working for Korea Water Resources Corp. since 1998. Mr. Lim is currently a Senior Manager of the same company.
Chang Hyun Sohn received his M.Sc. in Mechanical Engineering from KAIST in 1985. He then received his Ph.D. in Mechanical Engineering from KAIST in 1991. He worked in ADD for 3 years. He also worked as a Visiting Assistant Professor at the University of Cambridge in 1996. Dr. Sohn is currently a Professor at the Department of Mechanical Engineering at Kyungpook National University, Daegu, South Korea. His research interests are computational fluid dynamics, particle image velocimetry, flow induced vibration and thermal hydraulics.
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Lim, S.E., Sohn, C.H. CFD analysis of performance change in accordance with inner surface roughness of a double-entry centrifugal pump. J Mech Sci Technol 32, 697–702 (2018). https://doi.org/10.1007/s12206-018-0117-1
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DOI: https://doi.org/10.1007/s12206-018-0117-1