variavel0=<b>JOSÉ LUIZ ALVES DA FONTOURA RODRIGUES</b> - fontoura@unb.br UNB
<b>Régis Silvestre da Costa Ataídes</b> - regis_costa@bol.com.br UNB
<b>Abstract.</b> The main goal of this work is to present some results of the numerical simulation of a turbulent flow, with separation of the boundary layer, caused by adverse pressure gradient. It has been analyzed the turbulent flow of well known asymmetric plane diffuser experiment of Obi et al., 1993, improve Buice and Eaton, 1996. The turbulence model adopted is the classical K - E of Jones and Launder, 1972. The simulation of the boundary layer inner is done by means of tree different laws of wall: logarithmic law, Mellor,1966,  law and Nakayama and Koyama, 1984, law. The spatial discretization is done by means of P1/isoP2 finite element, while the temporal discretization is carried out by sequential semi-implicit algorithm of finite differences. The numerical solution of the pressure-velocity coupling is taken place by means of a variant of the Uzawa algorithm, proposed by Buffat,1981. To filter the numerical noises, originated casually by the symmetric treatment used by Galerkin method to the convective fluxes, it is adopted the balance dissipation method proposed by Huges and Brooks, 1979, and Kelly et al., 1980. The remaining non-linearlyties, due to laws of wall, are treated by minimal residual method proposed by Rodrigues,1990.
<b>Keywords.</b> Parietal Turbulence, Law of Wall, Boundary Layer Separation, Asymmetric Plane Diffuser, Finite Element.