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From these contours, you can observe that the air is being entrained near the jet inlet, and that the jet expands slightly along the x-direction. Also knowing that the flow velocity is related to the stream function Ψ by u = ∂Ψ/∂y and v = - ∂Ψ/∂x, one can see that the stream functions will be smaller in the entrainment and jet stream areas, because the flow is more strongly linear there. 

Now . go to 'Plots'-XY Plot and make a plot of how the axial velocity and half-width vary with axial distance x. These can be used to examine the self similarity of the solution. 

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An additional step is to plot the self-similar profiles U/U_center at various X locations, using the same exported data. The profiles appear to be self similar, although at X values closer to the inlet they will not match exactly due to the additional entrainment effects.

Turbulent Jet - Turbulent Setup and Solution

Go to Step 4: Turbulent Jet Setup and Solution

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