Swept

The node (

) creates a swept mesh on a domain in 3D by sweeping the mesh from the source face along the domain to an opposite destination face. The source and destination can consist of several connected faces.

You can control the number, size, and distribution of elements using the and subnodes. The node only reads properties from Size nodes defined on the entire geometry or on the domain level and Distribution nodes defined on the domain level.

In domain selection mode, this button works in the same way as the button. In boundary selection mode, the software creates a swept mesh on the remaining domains using the selected boundaries as source faces.

To create a swept mesh:

•

In the ribbon toolbar (Windows) or from the contextual toolbar (macOS and Linux), click the (

) button.

Specify the domains where you want a swept mesh. Choose the level of the geometry from the list:

•

Choose to specify swept mesh for remaining, unmeshed domains.

•

Choose to specify the domains for which you want a swept mesh. Choose in the list to select the domains in the window or choose to select all domains.

Click the button to toggle between turning ON

and OFF

selections.

To specify the source faces directly, activate the list and select the faces defining the source of the sweep operation in the window.

Click the button (

) to swap the faces in the source list above and the faces in the destination list in the section below.

To specify the destination faces directly, activate the list and select the faces defining the destination of the sweep operation in the window.

In the list, you can specify how the unmeshed source faces, which are meshed automatically by the Swept node, are meshed:

•

Select to generate a surface mesh with quadrilateral elements. This is the default meshing method.

•

Select to generate a surface mesh with triangular elements.

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Select to generate a surface mesh with quadrilateral elements using the algorithm used in version 5.2 and earlier versions of COMSOL Multiphysics.

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Select to generate a surface mesh with quadrilateral elements using the algorithm used in version 5.2a of COMSOL Multiphysics.

•

Select to generate a surface mesh with quadrilateral elements using the algorithm used in version 5.4 of COMSOL Multiphysics.

Use the list if you want to specify the shape of the sweep path:

•

The default, , means that the sweeping algorithm automatically tries to determine if the sweep path is straight or circular; otherwise, a general approach is used.

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means that all interior mesh points are located on straight lines between the corresponding source and destination points.

•

means that all interior mesh points are located on circular arcs between the corresponding source and destination points.

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means that the positions of the interior mesh points are determined by a general interpolation procedure.

Use the list if you want to specify the method to be used for transferring the source mesh to the destination:

•

The default, , means that the algorithm automatically tries to determine a suitable method for creating the destination mesh.

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means that the destination mesh is created by a rigid transformation of the source mesh.

•

means that the destination mesh is created from the source mesh by a morphing technique.

•

means that the destination mesh is created from the source mesh by a projection technique.

Select the check box to smooth the transition in element size across removed control entities. You can specify the number of smoothing iterations in the field. In the field you can specify the maximum element depth, from the boundary layer interface, for the mesh points to be smoothed.

You can choose between two different interpolation methods for the linking faces in the list. This specifies how the mapped mesher, which is used by the swept mesher for the linking faces, determines the positions of the interior mesh points. For more information on the different option see Mapped.