Numerical simulation of unsteady flow in a multistage centrifugal pump using sliding mesh technique

Huang Si*, A. A. Mohamad, K. Nandakumar, Z. Y. Ruan, D. K. Sang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

In this work, three-dimensional, unsteady Reynolds-Averaged Navier-Stokes (RANS) equations with standard k-ε turbulence models are solved by employing sliding mesh technique within an entire stage of a multistage diffuser pump to investigate transient flow field and pressure fluctuations due to the interaction between impeller and diffuser vanes. Sliding mesh calculation is carried out as the impeller zones slide (i.e., rotate) relative to diffuser zone along the grid interface in discrete time steps. The complicated time-periodic and spatial-periodic characteristics as well as rotor-stator interaction phenomena inside the pump stage are simulated and analysed to understand dynamic variation of the interior flow field and interference and finally to aim at optimal design.

Original languageEnglish
Pages (from-to)239-245
Number of pages7
JournalProgress in Computational Fluid Dynamics
Volume10
Issue number4
DOIs
StatePublished - Aug 2010
Externally publishedYes

Keywords

  • 3D flow field
  • Multistage centrifugal pump
  • Numerical simulation
  • Sliding mesh

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