Partition with Cylinder
Use Partition with Cylinder () to partition geometric entities of a mesh by creating at least one new geometric entity for the elements enclosed in the specified cylinder.
Figure 8-96: Using a Partition with Cylinder operation (pink edges) to define a boundary (highlighted blue) for the entrance to the ear canal on which to assign a Normal velocity boundary condition.
To add a Partition with Cylinder () node, select one or several entities in the Graphics window, then choose one of the following:
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Right-click in the Graphics window to open The Graphics Context Menu and select Partition with Cylinder () from the Booleans and Partitions menu.
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Click Booleans and Partitions () on The Mesh Toolbar and select Partition with Cylinder.
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Right-click a Mesh-Based Geometry node or a Mesh node and select Partition with Cylinder () from the Booleans and Partitions menu.
Enter the properties for Partition with Cylinder using the following sections:
Then use the following sections to specify the geometric entities to partition, the properties of the cylinder, and the condition for division:
Geometric Entity Selection
Define the geometric entities that you want to partition. You choose the geometric entity level from the Geometric entity level list:
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Choose Entire geometry to divide all geometric entities according to the specified cylinder.
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Choose Domain, Boundary, or Edge to specify the domains, boundaries, or edges, respectively, that you want to partition or choose a named selection to refer to a previously defined selection. Use All domains, All boundaries, or All edges to select all entities of the specified dimension.
size and shape
Specify the radius of the cylinder in the field r and the positions of the upper and lower boundary circles in the Top distance and Bottom distance fields, respectively.
position
Specify the position of cylinder in the x, y, and z fields.
axis
Use Axis type to set the direction of the cylinder axis. Choose x-axis, y-axis, or z-axis to let the cylinder axis coincide with one of the coordinate axes. It is also possible to customize the cylinder axis by choosing Cartesian or Spherical and using x, y, and z, or theta and phi, respectively.
Condition
Use the Include element if cylinder contains list to select the condition for an element to be enclosed in the specified cylinder. Choose All vertices to consider an element to be enclosed in the specified cylinder if all element vertices are inside, or choose Some vertex to consider it enclosed if at least one element vertex is inside the cylinder.
Selections of Resulting Entities
Select one or both of the Entities inside and Entities outside checkboxes to create predefined selections in subsequent nodes in the mesh sequence. To also make the selections available in all applicable selection lists in physics and materials settings, for example, choose an option from the Show in physics (Show in instances if in a mesh part) list: All levels, Domain selection, Boundary selection, Edge selection or Point selection. To keep the selection local to the mesh sequence or mesh part, choose Off. The default is Domain selection, which is suitable for use with materials and physics defined in domains. For use with a boundary condition, for example, choose Boundary selection. These selections do not appear as separate selection nodes in the model tree. From the Color list, choose a color for highlighting the resulting objects selection. See Selection Colors and Creating Named Selections in Mesh Sequences.
Head and Torso HRTF Computation: Application Library path Acoustics_Module/Tutorials,_Pressure_Acoustics/head_torso_hrtf.
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Create Edges
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Intersect with Line
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Intersect with Plane
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Partition with Ball
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Partition with Box
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Partition by Expression
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Union
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Detect Faces