On the development of viscous solvers for computation of transient flows in turbomachines

Alexander Wiedermann*, Kazuyoshi Miyagawa, Tsuyoshi Eguchi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This paper focuses on development and validation of a viscous solver for the computation of unsteady flows in turbomachinery blade rows and stages consisting of rotors and stators. The code has been evolved from steady-state single flow solvers developed by Wiedermann based on time-marching finite difference schemes. A two-equation eddy viscosity model is applied, and the wall boundary conditions are determined by the y+-distance of the first grid line away from the wall. For the solution of transient flow fields the original time-stepping algorithm is replaced by a time-accurate scheme. The emphasis of the code validation will be on blade-row interaction in a complete turbomachinery stage. A 3-D example will be discussed and those parameters evaluated which are important for actual blading design.

Original languageEnglish
Pages (from-to)251-261
Number of pages11
JournalInternational Journal of Rotating Machinery
Issue number4
Publication statusPublished - 1999
Externally publishedYes


  • Blade-row interaction
  • Code development
  • Turbulence models
  • Unsteady Navier-Stokes computation
  • Validation

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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