====== 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 ''[[doc:user:elements:general:def_element_properties|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''| [[doc:user:general:locks|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) 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'' | [[doc:user:elements:general:def_element_properties|Properties]] of [[#Element|boundary condition elements]] to generate |