0
TECHNICAL PAPERS

Flow in a Centrifugal Pump Impeller at Design and Off-Design Conditions—Part II: Large Eddy Simulations

[+] Author and Article Information
Rikke K. Byskov, Christian B. Jacobsen

Fluid Dynamic Engineering, Grundfos Management A/S, DK-8850 Bjerringbro, Denmark

Nicholas Pedersen

Department of Mechanical Engineering, Fluid Mechanics Section, Technical University of Denmark, DK-2800 Lyngby, Denmark

J. Fluids Eng 125(1), 73-83 (Jan 22, 2003) (11 pages) doi:10.1115/1.1524586 History: Received September 20, 2001; Revised August 23, 2002; Online January 22, 2003
Copyright © 2003 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Two stages of an industrial multistage pump with the shrouded centrifugal pump impeller under study, 28
Grahic Jump Location
Performance curve for a single stage of the multistage pump under investigation. The pump design point is marked by  * , and ○ shows the static pressure rise predicted in the LES simulations.
Grahic Jump Location
Blade-to-blade (left) and meridional (right) view of the impeller under investigation, 28. The circles indicate radii of comparison with experimental data. PS and SS refers to the blade pressure side and suction side, respectively.
Grahic Jump Location
Computational domain of the impeller. For reasons of visualization the shroud is not shown.
Grahic Jump Location
Cross-sectional view of mesh structure in the impeller mid-height
Grahic Jump Location
Convergence history in dual-time-stepping procedure for the continuity equation (upper curve) and z-momentum equation (lower curve) at design load
Grahic Jump Location
Time-averaged velocity field 〈W̃〉 in the impeller mid-height, z/b2=0.5.(Q/Qd=1.0)
Grahic Jump Location
Time-averaged radial velocity, 〈Wr〉/U2 at positions of constant radius. r/R2=0.5 (top) and r/R2=0.95 (bottom). (Q/Qd=1.0).
Grahic Jump Location
Time-averaged velocity field 〈W̃〉 in the impeller mid-height, z/b2=0.5.(Q/Qd=0.25)
Grahic Jump Location
Time-averaged radial velocity, 〈Wr〉/U2 at positions of constant radius. r/R2=0.5 (top) and r/R2=0.95 (bottom). (Q/Qd=0.25).
Grahic Jump Location
Sample instantaneous velocity derivation from the time-averaged velocity, W̃−〈W̃〉, in the impeller mid-height, z/b2=0.5.Q/Qd=1.0 (top) and Q/Qd=0.25 (bottom).
Grahic Jump Location
Turbulence intensity Tu=100k/U2 in the impeller mid-height at z/b2=0.5.Q/Qd=1.0 (top) and Q/Qd=0.25 (bottom).
Grahic Jump Location
Time-averaged SGS viscosity νsgs/ν in the impeller mid-height at z/b2=0.5.Q/Qd=1.0 (top) and Q/Qd=0.25 (bottom).
Grahic Jump Location
Time-averaged model parameter C in the impeller mid-height at z/b2=0.5.Q/Qd=1.0 (top) and Q/Qd=0.25 (bottom).
Grahic Jump Location
Radial (top) and tangential (bottom) velocities in the impeller mid-height, z/b2=0.5, at radial positions of r/R2=0.5 (left) and r/R2=0.9 (right). ——LES, – – – Baldwin-Lomax, [[dot_dash_line]] Chien k-ε and ○ PIV, 24. For PIV only every third data point is shown in order to avoid crowding. (Q/Qd=1.0.).
Grahic Jump Location
Radial (top) and tangential (bottom) velocities in the impeller mid-height, z/b2=0.5, at radial positions of r/R2=0.5 (left) and r/R2=0.9 (right). ——LES, – – – Baldwin-Lomax, [[dot_dash_line]] Chien k-ε and ○ PIV, 24. For PIV only every third data point is shown in order to avoid crowding. (Q/Qd=0.25).
Grahic Jump Location
Velocity field 〈W̃〉 in the impeller mid-height, z/b2=0.5, given at radial positions of r/R2={0.50,0.65,0.75,0.90}. Computed using LES (top) and measured using PIV (bottom). (Q/Qd=0.25).

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In