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

Petr Louda; Jaromír Příhoda; Pavel Šafařík

doi:10.14311/AP.2021.61.0110

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.

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References

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