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doc:user:elements:boundaries:convection

Convection

Materials

Since pressure/shear 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]Convection[2|3]DElement) param1 name of the property associated to the element (for example CONV_COEF 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]Convection[2|3]DElement

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

TO DO : Ajouter équations de convection

Parameters

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

Interaction

The interaction is defined as:

load = LoadingInteraction(no)
interactionset.add(load)
 no number of the Interaction gObject1, gObject2 mesh geometric entity where the boundary conditions are applied prp Properties of boundary condition elements to generate