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In the Viscous Model window, choose k-epsilon (2 eqn) for Model. Choose Realizable for k-epsilon Model. Choose Enhanced Wall Treatment for Near-Wall Treatment. Click OK as shown in the figure below.
Click on Boundary Conditions tab on the left hand side pane. Choose Outlet and click Edit....
Next, click on Solution Methods tab on the left hand side pane. Choose Second Order Upwind for Turbulent Kinetic Energy and Turbulent Dissipation Rate.
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Click on Run Calculation and set Number of Iterations to 1000.Click Calculate as shown below.
The solution converges in about iterations.
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