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Experimental investigations and numerical validation of an outlet guide vane with an engine mount recess

Johan Hjärne ; J. Larsson ; Valery Chernoray (Institutionen för tillämpad mekanik, Strömningslära)
Proc. of ASME TURBO EXPO 2008, Berlin, Germany p. 1-10. (2008)
[Konferensbidrag, refereegranskat]

This paper presents experiments and CFD calculations of a Low Pressure Turbine/Outlet Guide Vane (LPT/OGV) equipped with an engine mount recess (a bump) tested in the Chalmers linear LPT/OGV cascade. The investigated characteristics include performance for the design point in terms of total pressure loss and turning as well as a detailed description of the downstream development of the secondary flow field. 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 angle. The objective is to validate how accurately and reliably the secondary flow field and losses can be predicted for an LPT/OGV equipped with a bump. Three different turbulent models as implemented in FLUENT, the k-epsilon realizable model, the komega-SST model and the RSM are validated against detailed measurements. From these results it can be concluded that the komega-SST model predicts both the secondary flow field and the losses most accurately.



Denna post skapades 2008-03-11. Senast ändrad 2017-09-14.
CPL Pubid: 69084

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära (2005-2017)

Ämnesområden

Teknisk mekanik
Energiteknik
Strömningsmekanik

Chalmers infrastruktur