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CST2013: Boundary Conditions - Unit Cell

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Simulation: Settings Boundaries Unit Cell

The Unit Cell boundary condition virtually repeats the modeled structure periodically in two directions up to infinity. This dialog box allows you to define the periodicity of such an infinite array.

Note: Unit cell boundary conditions apply to the general purpose frequency domain solvers.

The picture on the right shows how a simple model is visualised in the main plot window before any Unit Cell boundary condition is applied.

As soon as the "Boundary Conditions" dialog box is open and a boundary has been set to "Unit Cell," the basic structure (the unit cell) will be plotted in its periodic expansion. The Unit Cell boundary condition expands the model always in the X-Y-plane of the global coordinate system.

Fit unit cell to bounding box

If this radio button is switched on, the model will be repeated at its bounding box borders (see picture above).

S1(x) / S2'(y) periodicity, Grid angle

S1(x) and S2'(y) define the distances between two neighbouring unit cells in two different coordinate directions. The spatial relation between these two axes is defined by the value of "Grid angle".

S1(x) is aligned to the x-axis of the global coordinate system.

Note: The hexahedral frequency domain solver needs a value of 90 degrees for "Grid angle."

Accepts your settings and leaves the dialog box.

Cancel

Closes this dialog box without performing any further action.

Help

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CST2013: Boundary Conditions - Unit Cell

Simulation: Settings Boundaries Unit Cell

The Unit Cell boundary condition virtually repeats the modeled structure periodically in two directions up to infinity. This dialog box allows you to define the periodicity of such an infinite array.

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