Navya C
Ansys Employee

Hi @supreeth.k,

You can apply a vector potential boundary condition and set it to zero to force the flux lines to remain within the simulation domain. Note that this is a default boundary condition in 3D at the exterior of the solution domain.

For electrical insulation,  to avoid current crossing the boundary, you can apply the insulating boundary condition.

You can refer to "Defining Boundary Conditions" section in maxwell help for more details on various boundary conditions available in different solvers in maxwell.