Adding an Impressed Current Source
Apply an impressed current source to represent a lightning strike and exit points.
Tip: For lightning strikes, use two impressed current sources to model the
strike point and exit point where the current flows off the structure. The source
should either have a current magnitude of -1 or a phase of 180°.
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On the Source/Load tab, in the
Ideal Source group, click the
Impressed Current Source icon.
Figure 1. The Create Impressed Current Source dialog.
- Under Position, specify the start point and end point of the current segment.
- Under Segment current, specify the magnitude and phase of the segment current at the start point and end point.
- In the Radius field, specify the radius of the current segment.
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[Optional] Select the Connect the endpoint to the closest mesh
vertex check box to terminate the current at the closest mesh
vertex during the solution.
- To connect to the closest triangle vertex, select On triangle.
- To connect to the closest segment vertex, select On segment.
CAUTION: Visually confirm in POSTFEKO that the source connects at the required vertex. - In the Label field, add a unique label for the impressed current source.
- Click the Create button to create the impressed current source and to close the dialog.