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doc:user:elements:boundaries:flux

Heat flux

Materials

Since flux interactions are boundary conditions interactions (LoadingInteraction), no materials must be associated to the element.

Element

Therefore, the first step consist in defining an ElementProperties, as

prp = ElementProperties(typeEl)
prp.put(param1, value1)
prp.depend(param1, fct1, Lock1)) #optional
...

where

typeEl desired element (for example Tm[2]Flux[2|3]DElement)
param1 name of the property associated to the element (for example FLUX
value1 value of the corresponding property
fct1 function which characterizes the dependency of the property (optional: no fct if no dependency)
Lock1 Lock which defines the dependency variable of the property (compulsory if there is a dependency)

Tm[2]Flux[2|3]DElement

Thermal flux element in 2/3D, first or second order (thermal field of second order)

TODO : Ajouter équations de flux

Parameters

Name Description Dependency
STIFFMETHOD Method used to compute the stiffness matrix\\= STIFF_ANALYTIC : analytic matrix (default)
= STIFF_NUMERIC : numerical matrix
-
FLUX Thermal flux time
NPG Number of integration points (default : tm : 2 / tm2 : 3) -

Interaction

The interaction is defined as:

load = LoadingInteraction(no)
load.push(gObject1)
load.push(gObject2)
...
load.addProperty(prp)
interactionset.add(load)

where

no number of the Interaction
gObject1, gObject2 mesh geometric entity where the boundary conditions are applied
prp Properties of boundary condition elements to generate
doc/user/elements/boundaries/flux.txt · Last modified: 2016/03/30 15:23 (external edit)