Analysing secondary vortex structures in an hp turbine stage using the realisable k-ω SST model

Authors

  • S. V. Yershov A. N. Podgorny Institute for Mechanical Engineering Problems of NAS of Ukraine, Ukraine
  • J. Swirydczuk Institute of Fluid-Flow Machinery of the Polish Academy of Sciences, Poland

Abstract

The article analyses the effect of turbulence model selection on the pattern of development and interaction of secondary vortex structures in an HP turbine stage. The basic tool used in the analysis is FlowER, a specialised code developed for studying flow through fluid-flow machine stages and stage sections. The flow calculations performed using a standard k-ω SST turbulence model presented highly unstable behaviour of the rotor passage vortex, which periodically built up, moved up along rotor blade suction side and broke down. On the other hand, the use of the modified version, taking into account realisability constraints, has made it possible to stabilise the rotor passage vortex behaviour

Author Biographies

S. V. Yershov, A. N. Podgorny Institute for Mechanical Engineering Problems of NAS of Ukraine

Professor

J. Swirydczuk, Institute of Fluid-Flow Machinery of the Polish Academy of Sciences

Doctor of Technical Sciences

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Published

2016-11-30

Issue

Vol. 13 No. 1 (2010)

Section

Aero- and hydrodynamics in energy machines

License

Copyright (c) 2016 S. V. Yershov, J. Swirydczuk

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