Adding a Contour for Dispersion Results

Turn off the visibility of the other post-processing visuals by uncheck the box next to their names.


  1. Click the Add Item tab and select Contour from the dropdown menu.

  2. Leave the Name as its auto-generated one.

  3. In the Simulation dropdown menu, select the HP Release 01 on Westerly, 5 m/s

  4. Set the Variable to Flammable Gas Volume Fraction, %LFL. The available variables will change depending on the simulation chosen.

  5. Select XY Plane from the On Plane dropdown menu.

  6. Set the Offset at: height to "5.94" meters as we want to view the concentration at the height of the leak defined earlier.

  7. Leave the Relative to: value set to Domain.

  8. Click the arrow next to Coloring and set the Range dropdown menu to User-Defined and set the Min: as "0" and the Max: to "100" as shown in Figure 22 below.

  9. Select the Add Item button and return to the Project Items Tab. Right click the newly added contour and select link to legend. Your window should resemble Figure 23 below.


Tutorial 2 - Figure 22 - Coloring dropdown section in the Add Contour panel setting the range to be user-defined



inFlux CFD High Pressure Dispersion Results Showing LFL on Contour

Tutorial 2 - Figure 23 - Contours can show information about the gas leak dispersion results as well as the ventilation information. Here the %LFL volume fraction is shown for the high pressure leak.



Note that it is not always necessary to add a contour for each case you want to view.


On the project items tab, previously defined contours can have their associated simulation switched to any simulation in the project, but not the variable it is displaying, i.e. you may change the contour to display any dispersion simulation but it will only display the %LFL volume fraction. Tutorial 6 will go over how to change the association of already defined contours and isosurfaces.


Continue to the next section to export the isosurface to an STL geometry file.