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INFLUENCE OF AIR COOLING AND AIR-JET VORTEX GENERATOR ON FLOW STRUCTURE IN TURBINE PASSAGE

Abstract

The paper concerns the experimental investigations and numerical simulations of a high loaded model of a turbine blade. An increase in the blade load leads to enlargement of a local supersonic zone terminated by a shock wave on the suction side. The Mach number upstream of the shock reaches up to 1.6. The interaction of the shock wave with a boundary layer at such a high Mach number leads to a strong separation. Streamwise vortices generated by air-jets were used for the interaction control. The work presents the experimental and numerical results of the application of an air-jets vortex generator on the suction side of cooled turbine blades. Very interesting results were obtained in the context of the air cooling and air-jet vortex generator influence on the flow structure in the turbine passage.

Keywords:

shock wave, separation control, air-jet vortex generator, blade cooling

Details

Issue
Vol. 19 No. 2 (2015)
Section
Research article
Published
2015-06-30
DOI:
https://doi.org/10.17466/TQ2015/19.2/L
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors

  • RYSZARD SZWABA

    Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN)
  • PAWEŁ FLASZYŃSKI

    Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN)
  • JAN ARTUR SZUMSKI

    Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN)
  • PIOTR DOERFFER

    Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN)

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