Card 9 - ELEMQED Edge Heat Flux

KODE

KODE is the code ELEMQED (or 43)

N1

N1 is an element number.

T1

T1 is the element edge number as defined in the diagram associated with the Card 9 - FREEFACE Element Free Face Generation. If the edge heat flux is applied to a beam or axisymmetric shell, then T1 is ignored. If the edge heat flux is applied to a shell or axisymmetric solid, then T1 is the edge number for which the heat flux is applied.

T2

T2 is the heat flux at the first end of the edge.

T3

T3 is the heat flux at the last end of the edge.

T4

T4 = CONSTANT if the heat flux is not table-dependent. A table number referencing TABTYPE and TABDATA cards for table-dependent heat flux.

Code example

ELEMQED 10 0 2.5 3.0 CONSTANT
ELEMQED 20 3 0.6 0.7 10
TABTYPE 10 QNODE TEMP
TABDATA 10 100.  0.
TABDATA 10 200.  100.
$ AN AVERAGE HEAT FLUX OF 2.75 IS APPLIED TO BEAM
$ ELEMENT 10 NOMINAL HEAT FLUX OF .65 FOR ELEMENT 20
$ HEAT FLUX IS MULTIPLIED BY INTERPOLATED
$ VALUE. HEAT FLUX VARIES FROM 100 to 200
$ OVER TEMPERATURE RANGE 0 TO 100.

Notes

For beam and shell elements, heat fluxes T2 and T3 are expressed as total heat per length. For axisymmetric shell and axisymmetric solid elements, T2 and T3 are expressed as total heat per area where the area is the surface area of the revolved edge. Heat flux cannot be applied to any other element type.

The total heat load is given by (T2+T3)/2 multiplied by the length of the edge or the area of the revolved edge. For table-dependent heat flux, this nominal value is multiplied by the value interpolated from the table.

When heat flux is applied to an edge of a shell or axisymmetric solid, a new beam of axisymmetric shell is created and the total heat is applied to this element as required.