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Assigning Boundaries

Boundary conditions specify the field behavior at the edges of the problem region and object interfaces. HFSS and HFSS-IE designs have different menu options for boundaries.

Within the context of HFSS and HFSS-IE, boundaries exist for two main purposes:

1. to create either an open or a closed electromagnetic model or,

2. to simplify the electromagnetic or geometric complexity of the electromagnetic model.

Click here for HFSS-IE boundaries.

You may assign the following types of boundaries to an HFSS design:

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You may also choose to designate a perfect E, finite conductivity, or impedance boundary as an infinite ground plane if you want the surface to represent an electrically large ground plane when the radiated fields are calculated during post processing.

Note

Hiding boundaries also turns off a check for boundary overlaps during boundary assignment. In the case of very large models with many boundaries, hiding boundaries can prevent delays during boundary assignment. Full model validation will subsequently check for boundary overlaps.

For convenience, you can access the Edit Global Materials command from the Boundaries menu.

Note

By default, the history tree in the 3D modeler window groups sheet objects according to boundary assignment. To change this, select the Sheets icon and right-click to display the Group Sheets by Assignment checkbox.

Related Topics

Technical Notes: Boundaries

Zoom to Selected Boundary

Setting Default Boundary Base Names

Designating Infinite Ground Planes

Modifying Boundaries

Deleting Boundaries

Reassigning Boundaries

Reprioritizing Boundaries

Edit Global Materials Environment

Duplicating Boundaries and Excitations with Geometry

Showing and Hiding Boundaries and Excitations

Reviewing Boundaries and Excitations in the Solver View

Setting Default Values for Boundaries and Excitations

Assigning HFSS-IE Boundaries