UTILIZATION OF THE GARTEUR SWEPT WING DATA-BASE FOR TURBULENCE MODELSEVALUATION IN BOUNDARY-LAYER CALCULATIONS

Three-dimensional flows are difficult test cases for turbulence models . Algebraic, two and five-equation models are tested here, in one or t wo-layer approaches, on the suction and the pressure side of the Garte ur AD/AG07 swept wing. Direct and inverse mode computations are perfor med. Skin friction coefficient and shape factor distributions as well as turbulent kinetic energy profiles are shown at 68% of span where th e flow is near separation at the suction side trailing edge, and accel erated in the last 30% of chord of the pressure side. Although providi ng fairly good skin friction predictions, the mixing-length model does not properly reproduce the mean velocity profiles for this type of th ree-dimensional flow. The two-layer approach (algebraic - five-equatio n) and the k-epsilon models are disappointing. Results of the k-phi mo del are promising. The k-omega SST model, used in inverse mode, is the most efficient of the tested models, but has also some difficulties t o predict with accuracy this type of flow. (C) 1998 Elsevier Science I nc. All rights reserved.