A boundary condition is used to specify field behavior on the surfaces of the design model. Each of these surfaces can have it's own unique boundary condition assigned or multiple adjoining surfaces can share the same boundary condition.

There are two types of boundary conditions in MagNet: Unary and Binary.

Unary conditions specify the field behavior on a given surface. These include:

  • Flux Tangential
  • Field Normal
  • Surface Impedance
  • Thin Plate

Binary conditions specify a relationship between two surfaces, either Even or Odd Periodic.

Flux tangential and Field Normal boundary conditions can be used to model symmetry planes and truncate the solution domain.

Even and odd binary constraints are used for efficient modeling of periodic structures.

Choosing a Boundary Condition on a surface
Field Normal boundary condition which constrains to zero the tangential component of the field
Flux Tangential boundary condition which constrains to zero the normal component of the magnetic flux density