Direct numerical simulations of flutter instabilities over a vibrating turbine blade cascade

2021 ◽  
Vol 104 ◽  
pp. 103324
Author(s):  
M.E. Nakhchi ◽  
M. Rahmati
Keyword(s):  
Numerical Simulations ◽  
Turbine Blade ◽  
Direct Numerical Simulations ◽  
Blade Cascade

scholarly journals Numerical simulations of the 2D supersonic flow through the tip-section turbine blade cascade with a flat profile

2021 ◽  
Vol 15 (2) ◽  
Author(s):  
Josef Musil ◽  
Jaromír Příhoda ◽  
Jiří Fürst
Keyword(s):  
Numerical Simulations ◽  
Turbine Blade ◽  
Stokes Equations ◽  
Transition To Turbulence ◽  
Navier Stokes ◽  
Bypass Transition ◽  
Flow Angle ◽  
Blade Cascade ◽  
Flow Through ◽  
Flat Profile

Numerical simulations of 2D compressible flow through the tip-section turbine blade cascade with a flat profile and the supersonic inlet were carried out by the OpenFOAM code using the Favre-averaged Navier-Stokes equations completed by the γ-Re_θt bypass transition model with the SST turbulence model. Predictions completed for nominal regimes were concentrated particularly on the effect of the shock-wave/boundary layer interaction on the transition to turbulence. Further, the link between the inlet Mach number and the inlet flow angle i.e. the so called unique incidence rule was studied. Obtained numerical results were compared with experimental data covering optical and pressure measurements.

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