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Menu: View results->Iso surfaces
With this result visualization a iso-surface , or line, is drawn passing through all the points which have the same result's value inside a volume mesh , or (iso-lines for a surface mesh). To create isosurfaces iso-surfaces there are several options.

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• Select View results->Iso surfaces->Automatic width->Velocity->|Velocity|

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• through the menu bar or clicking on Image Modified on the results view icon bar.

After choosing the result, you are asked for a width. This width is used to create as many isosurfaces iso-surfaces as are needed between the Minimum and Maximum defined values (these are included).

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• Enter the value 0.25727 to get the picture below.

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• Select View->Render->Smooth in order to get a better view.

Several configuration options can be set via the preferences window .

Menu: Utilities-->Preferences
In the Postprocess-->Iso surfaces tree
Display style the style of the iso-surface (similar options to the style of each set), set it to Body.
In order to see the inner zones we will set the transpacency transparency on the iso surfaces.

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• Select Transparency: Transparent

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• Move the model to see the inner zones

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• Restore again Transparency: Opaque

Image Modified
Other interesting options are:

• Color mode allows to draw the iso-surfaces with a single colour color (Monochrome), according to the results used to create the iso-surface (Result color) or using the color map of the visualized contour fill result (Contour fill color).
• For instance, select Color mode = Contour Fill Color and
• Do a contour fill of Pressure:

Image Modified

• Show isolines this option allows the user to switch isolines of surfaces on or off. Switch it off.
• Draw always if this option is selected the iso-surfaces are always drawn even though all the meshes are switched off.

It is possible to convert the iso-surfaces in a mesh of triangles, with the menu: Geometry->Convert->Iso surfaces to sets->Iso surfaces
Then a new mesh will appear in the view style window. This mesh could be for example exported to a file, or use the rest of mesh operations.