Card 9 - ELEMQFA Element Face Heat Flux

KODE

KODE is the code ELEMQFA (or 44)

N1

N1 is an element number.

T1

T1 is the element face number as defined in the diagram associated with the FREEFACE Card.

If the face heat flux is applied to a shell element, then T1 is ignored. If the face heat flux is applied to a solid, then T1 is the face number for which the heat flux is applied.

T2

T2 is the shell option. If the heat flux is applied to a face of a shell, then T2 is 1. If it is applied to the reverse side of a shell, it is 2. If it is applied to a face of a solid, then T2 is 0.

T3

T3 is the face heat flux applied to the element.

T4

T4 is:

• CONSTANT if the heat flux is not table-dependent.
• A table number referencing TABTYPE and TABDATA cards for table-dependent heat flux.

Code example

ELEMQFA 10 0 1 3.0 CONSTANT
$ A CONSTANT HEAT FLUX OF 3 IS APPLIED
$ TO SHELL ELEMENT 10
ELEMQFA 20 4 0 2.5 10
$ NOMINAL HEAT FLUX OF 2.5 ON FACE 4
$ OF SOLID ELEMENT 20.
TABTYPE 10 QNODE TEMP
TABDATA 10 10.   0.
TABDATA 10 20.   10.
$ HEAT FLUX IS MULTIPLIED BY INTERPOLATED VALUE.
$ HEAT FLUX VARIES
FROM 10 to 20 OVER TEMPERATURE
$ RANGE 0 TO 10.

Notes

Element face flux can only be applied to shell and solid elements.

The total heat load is given by the heat flux multiplied by the area of the face of the element. For table-dependent heat flux, this nominal value is multiplied by the value interpolated from the table.

When heat flux is applied to a face of a solid, a new shell element is created at that face and the total heat is applied to this element as required.