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Design, Numerical Analysis and Manufacture of Radial Pump Impellers with Various Blade Geometries

Michail D. Mentzos(1), Angelos P. Markopoulos(2*), Nikolaos I. Galanis(3), Dionissios P. Margaris(4), Dimitrios E. Manolakos(5)

(1) Fluid Mechanics Laboratory, Department of Mechanical Engineering and Aeronautics, University of Patras, Greece
(2) National Technical University of Athens, School of Mechanical Engineering, Section of Manufacturing Technology, Greece
(3) National Technical University of Athens, School of Mechanical Engineering, Section of Manufacturing Technology, Greece
(4) Fluid Mechanics Laboratory, Department of Mechanical Engineering and Aeronautics, University of Patras, Greece
(5) National Technical University of Athens, School of Mechanical Engineering, Section of Manufacturing Technology, Greece
(*) Corresponding author


DOI: https://doi.org/10.15866/ireme.v9i1.4833

Abstract


Impeller blade geometry plays a dominant role on the velocity profile of the fluid flowing through the pump. Although blades’ design is based on fluid dynamics considerations, it is sometimes limited by the available manufacturing methods, due to the required complexity in the geometry. In the present paper, the evolution of the velocity field in the blade passages of two anew designed radial pump impellers with different curvature and outlet blade angle is examined in order to verify their optimum design and characteristics. The numerical solution of the discrete three-dimensional, incompressible Navier-Stokes equations over a structured grid is accomplished with a commercial CFD finite-volume code. For each impeller, pressure and relative velocity distributions are presented and analyzed. The flow patterns in the blade passages are monitored and the mechanisms that dominate the flow field in the different regions of the impeller geometry are discussed. Furthermore, the new impellers that were tested numerically are manufactured in a CNC Milling Centre under the operation of sculptured surfaces; thus the feasibility of manufacturing the improved geometries is exhibited.
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Keywords


CFD; Performance Curves; Pump; Radial Impeller; CAD; CNC Manufacturing

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References


S. Vijaya Kumar, V. G. S. Mani, N. Devraj, Production Planning and Process Improvement in an Impeller Manufacturing using Scheduling and OEE Techniques, Procedia Materials Science, 5, pp. 1710-1715, 2014.
http://dx.doi.org/10.1016/j.mspro.2014.07.360

M. Tang, D. Zhang, M. Luo, B. Wu, Tool Path Generation for Clean-up Machining of Impeller by Point-searching Based Method, Chinese Journal of Aeronautics, 25(1), pp. 131-136, 2012.
http://dx.doi.org/10.1016/s1000-9361(11)60371-3

E. L. J. Bohez, S. D. R. Senadhera, K. Pole, J. R. Duflou, T. Tar, A Geometric Modeling and Five-Axis Machining Algorithm for Centrifugal Impellers, Journal of Manufacturing Systems, 16(6), pp. 422- 436, 1997.
http://dx.doi.org/10.1016/s0278-6125(97)81700-1

J. H. Lee, S. H. Kang, D. Y. Yang, Novel forging technology of a magnesium alloy impeller with twisted blades of micro-thickness, CIRP Annals - Manufacturing Technology, 57, pp. 261–264, 2008.
http://dx.doi.org/10.1016/j.cirp.2008.03.064

S. Srivastava, A. K. Roy, K. Kumar, Design of a mixed flow pump impeller and its validation using FEM analysis, Procedia Technology, 14, pp. 181 – 187, 2014.
http://dx.doi.org/10.1016/j.protcy.2014.08.024

Douvi, E.C., Margaris, D.P., Aerodynamic performance investigation under the influence of heavy rain of a NACA 0012 airfoil for wind turbine applications, (2012) International Review of Mechanical Engineering (IREME), 6 (6), pp. 1228-1235.

Giannoulis, D.-P.A., Margaris, D.P., Numerical simulation of the three-phase flow formed within the riser tube of a system designed to remove leaking oil from maritime accidents, (2014) International Review of Mechanical Engineering (IREME), 8 (1), pp. 94-99.

N. Pedersen, P. S. Larsen, C. B. Jacobsen, Flow in a Centrifugal Pump Impeller at Design and Off-Design Conditions – Part I: Particle Image Velocimetry (PIV) and Laser Doppler Velocimetry (LDV) Measurements, Journal of Fluid Engineering, 125, pp. 61-72, 2003.
http://dx.doi.org/10.1115/1.1524585

W.-G. Li, Inverse Design of Impeller Blade of Centrifugal Pump with a Singularity Method, Jordan Journal of Mechanical and Industrial Engineering, 5, pp. 119-128, 2011.

Kaul, R., Sapali, S.N., CFD analysis of turbulent flow over centrifugal pump's impeller of various designs and comparison of numerical results for various models, (2013) International Review of Mechanical Engineering (IREME), 7 (1), pp. 248-260.

Manikandan, J., Senthil, V., Nagarajan, S., Effect of Bowl-Impeller axial gap in a mixed flow submersible pump using computational fluid dynamics, (2014) International Review of Mechanical Engineering (IREME), 8 (1), pp. 68-74.

R. W. Westra, L. Broersma, K. van Andel, N. P. Kruyt, PIV Measurements and CFD Computations of Secondary Flow in a Centrifugal Pump Impeller, Journal of Fluid Engineering, 132, pp. 119-128, 2010.
http://dx.doi.org/10.1115/1.4001803

R. K. Byskov, C. Jacobsen, N. Pedersen, Flow in a Centrifugal Pump Impeller at Design and Off-Design Conditions – Part II: Large Eddy Simulations, Journal of Fluid Engineering, 125, pp. 73-83, 2003.
http://dx.doi.org/10.1115/1.1524586

B. Neumann, The interaction between geometry and performance of a centrifugal pump, (Mechanical Engineering Publications Limited London, 1991).

M. D. Mentzos, A. E. Filios, D. P. Margaris, D. G. Papanikas, CFD predictions of flow through a centrifugal pump impeller, Proc. 1st International Conference on “Experiments / Process / System Modelling / Simulation / Optimization”, Athens, Greece, 2005, pp. 1-8.

J. Gonzalez, J. Fernandez, E. Blanco, C. Santolaria, Numerical simulation of the dynamic effects due to impeller-volute interaction in a centrifugal pump, ASME Journal of Fluids Engineering, 124, pp. 348-355, 2002.
http://dx.doi.org/10.1115/1.1457452

B. E. Launder, D. B. Spalding, The numerical computation of turbulent flows, Computer Methods in Applied Mechanics and Engineering, 3, pp. 269-289, 1974.
http://dx.doi.org/10.1016/0045-7825(74)90029-2

J.F. Gülich, Centrifugal Pumps, (Springer-Verlag, Berlin, 2008).
http://dx.doi.org/10.1007/978-3-642-12824-0

T. Varady, An Experimental System for Interactive Design and Manufacture of Sculptured Surfaces, Computers in Industry, 3(1-2), pp. 125-135, 1982.
http://dx.doi.org/10.1016/0166-3615(82)90040-9

R. L. G. Monaro, A. L. Helleno, K. Schützer, Evaluation of Dynamic Behavior of Machine Tools for Sculptured Surface Manufacturing, Procedia CIRP, 7, pp. 317 – 322, 2013.
http://dx.doi.org/10.1016/j.procir.2013.05.054

Z. C. Chen, D. Song, A Practical Approach to Generating Accurate Iso-Cusped Tool Paths for Three-Axis CNC Milling of Sculptured Surface Parts, Journal of Manufacturing Processes, 8(1), pp. 29-38, 2006.
http://dx.doi.org/10.1016/s1526-6125(06)70099-8

J. Tuzson, Centrifugal Pump Design, (John Wiley & Sons, Inc., 2006).

C. P. Hamkins, S. Bross, Use of Surface Flow Visualization Methods in Centrifugal Pump Design, Transactions of the ASME, 124, pp. 314-318, 2002.
http://dx.doi.org/10.1115/1.1470477

Al Hazza, M.H.F., Adesta, E.Y.T., Hasan, M.H., Shaffiar, N., Surface roughness modeling in high speed hard turning using regression analysis, (2014) International Review of Mechanical Engineering (IREME), 8 (2), pp. 431-436.

C. Felhő, J. Kundrák, Comparison of Theoretical and Real Surface Roughness in Face Milling with Octagonal and Circular Inserts, Key Engineering Materials, 581, pp. 360-365, 2014.
http://dx.doi.org/10.4028/www.scientific.net/kem.581.360


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