Outlet
Use the Outlet node to determine what happens to the grains when passing through the selected boundaries. The Accumulator (Boundary) subnode is available from the context menu (right-click the parent node) or from the Attributes menu on the Physics toolbar.
Outlet
Select a Wall condition: Disappear or Pass through (the default).
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When Disappear is selected, the grains passing through the boundaries are removed from the modeling domain.
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By default, any common boundary between two adjacent domains are treated as rigid walls. Use the Pass through condition to allow the grains to pass from one domain to the other.
The Granular Flow interface also provides the Bounding Box feature to remove grains. For performance reasons, it is recommended to use the Bounding Box instead of the Disappear option when possible.