INVESTIGATION OF COMPRESSIBLE FLOW THROUGH A TURBINE BLADE CASCADE FOR VARIOUS TRANSONIC FLOW REGIMES

Authors

  • Petr Louda Czech Technical University in Prague, Faculty of Mechanical Engineering, Karlovo nám. 13, 121 35 Praha, Czech Republic
  • Jaromír Příhoda Institute of Thermomechanics of the Czech Academy of Sciences, Dolejškova 5, 182 00 Praha, Czech Republic
  • Pavel Šafařík Czech Technical University in Prague, Faculty of Mechanical Engineering, Karlovo nám. 13, 121 35 Praha, Czech Republic

DOI:

https://doi.org/10.14311/AP.2021.61.0110

Keywords:

Transonic flow, turbine blade cascade, numerical simulations, transition

Abstract

This paper deals with the numerical simulation of 2D transonic flow through the SE1050 turbine blade cascade at various flow conditions. The first one concerns the design operation with a zero incidence angle involved in the ERCOFTAC Database CFD-QNET and the second one with a +20° incidence angle corresponding to an off-design operation. Advanced mathematical models with two different models of the bypass transition to turbulence were applied for the simulation of different regimes of transonic flows as well as with attached and separated flows. Transition models proposed by Dick et al. [1] and by Menter and Smirnov [2] are based on transport equations for the intermittency coefficient. Numerical results were compared with experimental data based on the optical and pressure measurements.

References

E. Dick, S. Kubacki, K. Lodefier, W. Elsner. Engineering applications of computational fluid dynamics, vol. 2, International Energy and Environment Foundation, chap. Intermittency modelling of transitional boundary layer flows on steam and gas turbine blades, pp. 173 – 216. 2012.

F. R. Menter, P. E. Smirnov, T. Liu, R. Avancha. A one-equation local correlation-based transition model. Flow, Turbulence and Combustion 95:583 – 619, 2015. doi:10.1007/s10494-015-9622-4.

M. Štastný, P. Šafařík. Experimental analysis data on the transonic flow past a plane turbine cascade. In Proceedings of the ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition, vol. 1: Turbomachinery of Turbo Expo: Power for Land, Sea, and Air. 1990. doi:10.1115/90-GT-313.

M. Štastný, P. Šafařík. Boundary layer effects on the transonic flow in a straight turbine cascade. In Proceedings of the ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition, vol. 1: Turbomachinery of Turbo Expo: Power for Land, Sea, and Air. 1992. doi:10.1115/92-GT-155.

J. Příhoda, K. Kozel. Steam turbine rotor cascade, AC 6-12. Tech. rep., ERCOFTAC QNET-CFD Database, 2004. http://qnet-ercoftac.cfms.org.uk/ w/index.php/AC_6-12_Description.

P. Šafařík, M. Štastný, M. Babák. Numerical and experimental testing of transonic flow in the etalon turbine cascade SE 1050. In G. Bois, M. Štastný, C. H. Sieverding (eds.), Proc. 5th European Conference on Turbomachinery, pp. 1007 – 1016. Prague, 2003.

J. Dobeš, J. Fořt, J. Fürst, et al. Experimental and numerical analysis of transonic flow through plane turbine cascade. Engineering Mechanics 10:413 – 426, 2003.

D. Šimurda, J. Fürst, M. Luxa. 3D flow past transonic turbine cascade SE 1050 - Experiment and numerical simulations. Journal of Thermal Science 22:311 – 319, 2013. doi:10.1007/s11630-013-0629-7.

J. Amecke, P. Šafařík. Data reduction of wake flow measurements with injection of another gas. DLR-Forschungsbericht 95-32, Göttingen, 1995.

R. B. Langtry, F. R. Menter. Correlation-based transition modeling for unstructured parallelized computational fluid dynamics codes. AIAA Journal 47(12):2894 – 2906, 2009. doi:10.2514/1.42362.

F. R. Menter. Two-equation eddy-viscosity turbulence models for engineering applications. AIAA Journal 32(8):1598 – 1605, 1994. doi:10.2514/3.12149.

J. Váchová, M. Luxa, J. Příhoda, D. Šimurda. Transition model application on mid-section turbine blade cascade. In Proc. 12th International Symposium on Experimental Computational Aerothermodynamics of Internal Flows. Lerici, Italy, 2015.

P. Straka, J. Příhoda, P. Šafařík. Prediction of boundary layer transition in transonic blade cascade with sudden change of surface curvature. In Proc. 18th International Scientific Conference Application of Experimental and Numerical Methods in Fluid Mechanics and Energy, pp. 261 – 268. Žilina, 2012.

Downloads

Published

2021-02-10

Issue

Section

Refereed Articles