Interactions between turbulent wakes and boundary layers

Experimental measurements and numerical computations are presented for five cases of two-dimensional turbulent wakes mixing with boundary layers. These were set up so as to simulate the positive streamwise pressure gradient and wake structure found on multielement aerofoils. The algebraic stress turbulence model of Rodi, in conjunction with the boundary-layer equations, successfully postdicted all five test cases, outperforming an improved version of the k-epsilon model. A minor failure of both methods to postdict accurately the edge of the wake may be attributed to its intermittency. (Author)