Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)In the present work, wall-resolved Large Eddy Simulations (LES) of incompressible turbulent flows are presented for a convergent-divergent channel with adverse pressure gradients. The paper presents comparative results for different Reynolds numbers, studying wall friction coefficients and turbulent kinetic energy budgets from LES computations. The turbulent kinetic energy budgets are investigated at the separation and at re-attachment points. The CFD code used in this work is based on the incompressible Navier-Stokes equations, solved for structured grids with a semi-spectral methodology. The simulations performed are wall-resolved and the WALE subgrid scale model is used for turbulence closure. The analyses of the turbulent kinetic energy budgets find specific distribution patterns, respectively, at separation and re-attachment points. 139914102008/57866-1, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo2013/03413-4, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo2013/07375-0, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo2014/07623-6, FAPESP, Fundação de Amparo à Pesquisa do Estado de São PauloFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Jesus, A.B., Schiavo, L.A.C.A., Azevedo, J.L.F., Laval, J.-P., An assessment of attached and mildly separated flows in adverse pressure gradient regions (2014) 52nd AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, , AIAA Paper No. AIAA 2014-0583 National Harbor, MD, JanJeyapaul, E., Rumsey, C., Analysis of highly-resolved simulations of 2-d humps toward improvement of second-moment closures 51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, , AIAA Paper No. AIAA 2013-0684 Grapevine, TX, Jan. 2013Menter, F.R., Kuntz, M., Langtry, R., Ten years of industrial experience with the sst turbulence model (2003) Turbulence, Heat and Mass Transfer, 4. , Begell House, IncMarquillie, M., Laval, J.P., Dolganov, R., Direct numerical simulation of separated channel flows with a smooth profile (2008) Journal of Turbulence, 9 (1), pp. 1-23Laval, J.-P., Marquillie, M., Ehrenstein, U., On the relation between kinetic energy production in adverse-pressure gradient wall turbulence and streak instability (2012) Journal of Turbulence, 13 (21), pp. 1-16Marquillie, M., Ehrenstein, U., Laval, J.-P., Instability of streaks in wall turbulence with adverse pressure gradient (2011) Journal of Fluid Mechanics, 681, pp. 205-240. , AugStanislas, M., Jimenez, J., Marusic, I., (2009) Progress in Wall Turbulence: Understanding and Modeling, , ERCOFTAC, SpringerMarquillie, M., Ehrenstein, U., On the onset of nonlinear oscillations in a separating boundary-layer flow (2003) Journal of Fluid Mechanics, 490, pp. 169-188Kuban, L., Laval, J.-P., Elsner, W., Tyliszcak, A., Marquillie, M., Lesmodeling of converging-diverging turbulent channel flow (2012) Journal of Turbulence, 16 (11), pp. 1-19Nicoud, F., Ducros, F., Subgrid-scale stress modelling based on the square of the velocity gradient tensor (1999) Flow, Turbulence and Combustion, 62, pp. 183-200Canuto, C., Hussaini, M.Y., Quarteroni, A., Zang, T.A., (1988) Spectral Methods in Fluid Dynamics, , Springer-Verlarg, Berlin Heidelberg, 4th edKarniadakis, G.E., Israeli, M., Orszag, S.A., High-order splitting methods for the incompressible navier-stokes equations (1991) Journal of Computational Physics, 97, pp. 414-443Moser, R.D., Kim, J., Mansour, N.N., Direct numerical simulation of turbulent channel flow up to re<inf>τ</inf> = 590 (1999) Physics of Fluids, 11 (4), pp. 943-9451st Pan-American Congress on Computational Mechanics, PANACM 2015 and the 11th Argentine Congress on Computational Mechanics, MECOM 201527 April 2015 through 29 April 2015