Turbulent Jet Results

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Plot the axial velocity of the turbulent jet at the centerline by going to Plots - XY Plot and click "Set Up". Select the options as in the dialogue below. Make sure to select the centerline surface as the surface to plot the velocity alongunder Surfaces.

The centerline axial velocity should look like this:

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The turbulent kinetic energy is the mean kinetic energy per unit mass in the fluctuating velocity field. It is governed by a production term P, a dissipation term -ε, mean flow convection -Dk/Dt, and turbulent transport -grad(T). The peak in turbulent kinetic energy just after the inlet is due to the production term (affected by fluid shear or friction) dominating; the turbulent kinetic energy again approaches zero as the distance from the inlet increases as the fluid is convected and dissipated away from the centerline into the surroundings.

Again, use Matlab or Excel to plot the half width and self-similar profiles U/U_center at various X locations, using exported data as is done in the Laminar Results section. This analysis is intended for more advanced users; if you do not have Matlab, read through the results and skip to the next section.

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