Numerical validations of secondary flows and loss development downstream of a highly loaded low pressure turbine outlet guide vane cascade
Paper i proceeding, 2007

In this paper 3D numerical simulations of turbulent incompressible flows are validated against experimental data from the linear low pressure turbine/outlet guide vane (LPT/OGV) cascade at Chalmers in Sweden. The validation focuses on the secondary flow-fields and loss developments downstream of a highly loaded OGV. The numerical simulations are performed for the same inlet conditions as in the test-facility with engine-like properties in terms of Reynolds number, boundary-layer thickness and inlet flow angles with the goal to validate how accurately and reliably the secondary flow fields and losses for both on- and off-design conditions can be predicted for OGV’s. Results from three different turbulence models as implemented in FLUENT, k-epsilon Realizable, k-omega-SST and the RSM are validated against detailed measurements. From these results it can be concluded that the RSM model predicts both the secondary flow field and the losses most accurately.


Jonas Larsson

Valery Chernoray

Chalmers, Tillämpad mekanik, Strömningslära

Lennart Löfdahl

Chalmers, Tillämpad mekanik, Fordonssäkerhet

Proc. of ASME TURBO EXPO 2007, Paper no GT2007-27712

0791837963 (ISBN)



Strömningsmekanik och akustik



Mer information