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Unsteady Flow Simulation in an Axial Flow Turbine Using a Parallel Implicit Navier-Stokes Method

In: High Performance Computing in Science and Engineering ’98

Author

Listed:
  • Alexander R. Jung

    (Universität Stuttgart, Institut für Thermische Strömungsmaschinen und Maschinenlaboratorium)

  • Jürgen F. Mayer

    (Universität Stuttgart, Institut für Thermische Strömungsmaschinen und Maschinenlaboratorium)

  • Heinz Stetter

    (Universität Stuttgart, Institut für Thermische Strömungsmaschinen und Maschinenlaboratorium)

Abstract

The unsteady flow in an axial flow turbine stage with a second stator blade row is investigated by means of a Navier-Stokes code especially developed for turbomachinery applications. Due to the low aspect ratio of the blades of the test machine a highly three-dimensional flow dominated by secondary flow structures is observed. Simulations that include all blade rows are carried out. The present investigation focuses on the stator/rotor/stator interaction effects. Secondary flow structures and their origins are identified and tracked on their way through the passage. The time-dependent secondary velocity vectors and total pressure distributions as well as flow angles and Mach number distributions as perturbation from the time-mean flow field are shown in cross-flow sections and azimuthal cuts throughout the turbine. Simulations and measurements show a good overall agreement in the time-dependent flow behaviour as well as in the secondary flow structures.

Suggested Citation

  • Alexander R. Jung & Jürgen F. Mayer & Heinz Stetter, 1999. "Unsteady Flow Simulation in an Axial Flow Turbine Using a Parallel Implicit Navier-Stokes Method," Springer Books, in: Egon Krause & Willi Jäger (ed.), High Performance Computing in Science and Engineering ’98, pages 269-294, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-58600-2_28
    DOI: 10.1007/978-3-642-58600-2_28
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