Experimental investigations and numerical validation of an outlet guide vane with an engine mount recess
Paper i proceeding, 2008

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.

Författare

Johan Hjärne

Volvo

Jonas Larsson

Chalmers University of Technology

Valery Chernoray

Chalmers, Tillämpad mekanik, Strömningslära

2008 ASME Turbo Expo; Berlin; Germany; 9 June 2008 through 13 June 2008

Vol. 6

Ämneskategorier

Maskinteknik

Energiteknik

Strömningsmekanik och akustik

DOI

10.1115/GT2008-50168

ISBN

978-079184316-1