Influence of air cooling and air-jet vortex generator on flow structure in turbine passage

• Autorzy: Szwaba R. , Flaszyński P. , Szumski J. A. , Doerffer P.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

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

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2015
• Tom: Vol. 19, No 2
• Strony: 153--166
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Szwaba R.

• Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN), Fiszera 14, 80-231 Gdansk, Poland

autor

Flaszyński P.

• Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN), Fiszera 14, 80-231 Gdansk, Poland

autor

Szumski J. A.

• Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN), Fiszera 14, 80-231 Gdansk, Poland

autor

Doerffer P.

• Instytut Maszyn Przepływowych Polskiej Akademii Nauk (IMP PAN), Fiszera 14, 80-231 Gdansk, Poland

Bibliografia

• [1] Pearcy H 1961 Shock induced separation and its prevention by design and boundary layer control, Lachmann C V (ed.), Pergamon Press 1166
• [2] Szwaba R 2005 Journal of Thermal Science 14 (3) 249
• [3] Szwaba R 2011 Aerospace Science and Technology 15 45
• [4] Szwaba R 2013 Journal of Thermal Science 22 (4) 294
• [5] Flaszynski P, Doerffer P, Szwaba R 2009 New Concept of Test Section for Flow Modeling on Suction Side of Gas Turbine Blade, XIX International Symposium on Air Breathing Engine (ISABE)
• [6] Flaszynski P 2007 Numerical optimization of single vortex under the effectiveness of its interaction, IMP PAN Publ., No. 7144/07
• [7] Magagnato F 1998 TASK Quarterly 2 (2) 215
• [8] Swanson R C, Turkel E 1987 Artificial dissipation and central difference schemes for the Euler and NS-equations, AIAA-paper, 87-1107
• [9] Martinelli L, Jameson A 1988 Validation of a multigrid method for the Reynolds averaged equations, AIAA-paper, 88-0411
• [10] Szwaba R, Flaszynski P, Doerffer P 2011 Effect of Flow Control by Fluidic Jets on Heat Transfer of Cooled Turbine Blades, XX International Symposium on Air Breathing Engine (ISABE)