The heat flux at the face of an element can be prescribed in the first load case, with the identifier T 4, or in any subsequent load case, with the identifier T 14. In the first case, the prescription applies to the entire process under consideration; in the other cases, only to the load case in which it was declared.
In the name.iB file, a vector is first defined using a SV set:
SV set number T 4/14 V $\dot q$
and the set thus defined is then assigned to the face of the selected elements:
AS load case number /$\dots$ /S set number E element number list S face number /$\dots$
where $\dot q~[\text{W}/\text{m}^2]$ is the heat flux.
Note
Faces and their local numbers are defined for isoparametric elements and semi-loof elements, see the Reference Manual. For 2D isoparametric elements, the edge of the element is considered its face, since it has a nonzero thickness (and therefore also an area). For heat transfer computations, a semi-loof element has two faces defined.
Note
The components of the vector can depend on the global coordinates $x,y,z$, using any of the available functional dependencies, see the Reference Manual.