How to apply adiabatic boundary conditions in heat transfer problem

1

Hello,
I just want to know how to apply adiabatic boundary conditions (insulation) in heat transfer analysis in Calculix.

Thanks in advance!!
Regards,
Anoop

2

The default (natural) boundary condition is zero heat flux (perfect insulation, no heat flow through the surface). It’s used when no temperature BCs or heat flux loads are applied to a boundary.