# Boundary Condition: Magnetic Potential

## Function:

Applies magnetic potential value.

## Application:

Point, Line, Surface.

## Description:

This condition is typically used to set Dirichlet conditions (zero potential) at the boundary of the magnetic domain.
It can also be used, with a non-zero value, to force a magnetic excitation.

## Remarks:

- The magnetic potential is defined in webers per meter.
- When used to force a magnetic excitation, only a scalar value (A), corresponding to the amplitude, can be defined [A × sin (ω × t)].

## Illustration:

## ATILA Equivalent:

- For a Dirichlet condition (A=0), the ATILA equivalent is a boundary condition (after the END command) in the format -N D 0, where N is the node number where the constraint is applied, and D is 4 or 5 depending on the position of the magnetic potential variable (see the LCPDDC command in ATILA).
- For a Forced condition, the ATILA equivalent is an EXCITATION in the form N MAGNPOT RE IM, where N is the node where number the constraint is applied, and RE = A and IM = 0 are the real and imaginary parts of the forcing function.

Back