An S-duct flow is subjected to an entrance flow of Mach 0.6. The duct turns 30˚ and reverses its turn by 30˚, followed by a straight section. Such an internal flow induces a secondary flow due to curvature effect. Goal of this paper is to show the s...
An S-duct flow is subjected to an entrance flow of Mach 0.6. The duct turns 30˚ and reverses its turn by 30˚, followed by a straight section. Such an internal flow induces a secondary flow due to curvature effect. Goal of this paper is to show the sensitivity of outflow boundary conditions on the quality of numerical solutions as well as to show curvature effect on the flow field. The often-used Baldwin-Lomax turbulence model is shown to be less functional on the concave region when the secondary flow has its strong influence.