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 two types of boundary conditions in ThermNet: Unary and Binary

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

• Perfect insulator
• Specified temperature
• Environmental conditions for specifying the temperature outside and the way the heat flows through the boundary

Binary conditions specify a relationship between two surfaces. ThermNet's even periodic boundary condition permits a device with periodic symmetry to be partially modeled while still yielding simulation results of the full geometry.