A special Grain dataset, selected from the More Datasets submenu, provides the possibility to visualize grain positions computed by a Granular Flow interface. The Grain dataset is automatically created when solving a model containing a Granular Flow interface, if the Generate default plots option is selected in the Study. Selections can be added to the grain dataset, which makes it possible to compute, for example, the number or fraction of grains in a given domain or on a given boundary during results processing. You can visualize the grains using a plot of the grain positions in the original dimension, as a Poincaré map, or as a 2D phase portrait.