Abstract
In this paper, the internal flow field in a centrifugal pump working at the design flow rate operating condition has been measured using the particle image velocimetry (PIV) technique with the fluorescent particles and the index-matched fluid technology. The index-marching fluid with the same refractive index as the transparent material has been prepared and applied in the present test of pump with geometrical complex walls. The comparison between velocity distributions of PIV results both with and without fluorescent particles, as well as with and without index-marching fluid are conducted to find the differences. The DES (Detached Eddy Simulation) has been employed to calculate the three-dimensional unsteady turbulent flow in the pump to examine and to certify the PIV measurement results. The DES results of instantaneous flow velocity fields agree with PIV test results with fluorescent particles and index-marching fluid. It is necessary to perform the PIV measurement of pumps with fluorescent seeds and index-marching fluid in order to get exact results. The experimental results show the distributions of velocity, steamlines, and the principal Reynolds normal stress (PRNS) and the principal Reynolds shear stress (PRSS).
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Akin O, Rockwell D. Flow structure in a radial flow pum** system using high-image-density Particle Image Velocimetry. J Fluids Eng, 1994, 116: 538–544
Eisele K, Zhang Z, Casey M. Flow analysis in a pump diffuser-Part 1: LDA and PTV measurements of the unsteady flow. J Turbomach, 1997, 119: 968–977
Dong R, Chu S, Katz J. Quantitative visualization of the flow within the volute of a centrifugal pump. Part B: Results and analysis. J Fluids Eng, 1992, 114: 396–403
Yang H, Liu C, Tang F P, et al. Experimental study on the flow field in the blade to blade of a centrifugal pump by PIV. J Hydrodynamics Ser A, 2002, 17(5): 547–551
Pedersen N, Larsen P S. Flow in a centrifugal pump impeller at design and off-design conditions-Part I: Particle Image Velocimetry (PIV) and Laser Doppler Velocimetry (LDV) measurements. J Fluids Eng, 2003, 125: 61–72
Choi Y D, Kurokawa J, Nishino K, et al. Internal flow measurement of a very low specific speed centrifugal pump by PIV. In: Proc Int Sym Fluid Visualization. Kyoto, Japan, 2002. F0221
Kosyn G, Friedrichs J. Unsteady PIV flow field analysis of a centrifugal pump impeller under rotating cavitation. In: 5th Int Symp Caitation (Cav2003). Osaka, Japan, 2003. Cav03-OS-6-005
Guleren K M, Pinarbasi A. Numerical simulation of the stalled flow within a vaned centrifugal pump. J Mech Eng Sci, 2004, 218(C): 425–435
Budwig R. Refractive index matching methods for liquid flow investigations. Exp Fluids, 1994, 17: 350–355
Uzol U, Chow Y C, Katz J, et al. Unobstructed PIV measurements within an axial turbo-pump using liquid and blades with matched refractive indices. In: 4th Int Symposium Particle Image Velocimetry. Göttingen, Germany, 2001. PIV’01 Paper 1085
Wu Y L, Yuan H J, Shao J, et al. Experimental study on internal flow of a mini centrifugal pump by PIV measurement. Int J Fluid Mach, 2009, 2(2): 121–126
Adrian R J. Particle imaging techniques for fluid mechanics. Annu Rev Fluid Mech, 1991, 23: 261–304
Keane R D, Adrian R J. Theory of cross-correlation analysis of PIV images. Appl Sci Res, 1992, 49: 191–215
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, Y., Liu, S., Yuan, H. et al. PIV measurement on internal instantaneous flows of a centrifugal pump. Sci. China Technol. Sci. 54, 270–276 (2011). https://doi.org/10.1007/s11431-010-4262-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11431-010-4262-3