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doc:user:elements:boundaries:convection

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doc:user:elements:boundaries:convection [2026/07/29 17:29] – [CombineHConvectionMaterial] papeleuxdoc:user:elements:boundaries:convection [2026/07/29 18:05] (current) – [Material] papeleux
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 The Convection Materials are implemented to take into account the heat exchange by convection between the boundary of a mesh and the surrounding fluid atmosphere. They are designed to be associated with ''Tm(2)Boundary2D(3D)Element'', but will also be usable with ''Tm(2)Source2D(3D)Element'', even if the physical meaning is questioning... The Convection Materials are implemented to take into account the heat exchange by convection between the boundary of a mesh and the surrounding fluid atmosphere. They are designed to be associated with ''Tm(2)Boundary2D(3D)Element'', but will also be usable with ''Tm(2)Source2D(3D)Element'', even if the physical meaning is questioning...
 +
 +Excepted to the ''ConvectionMaterial'', the flux is linked to a spatial distribution functions related to a set of  local coordinates {$x'$, $y'$, $z'$}, which are handled by the X, Y and Z Axis defined in the Material.
 +The local Axis are Line Objects that are defined in the CurveSet and referred in the material by their number.
 +
 +
 +{{ doc:user:elements:boundaries:heat_localcoord.png?400 |Coordonnées locales du la source de chaleur}}
 +
  
 The different laws allows to exchange heat with atmosphere or to model heat exchange due to a fluid jet such as a gas torch for example. The different laws allows to exchange heat with atmosphere or to model heat exchange due to a fluid jet such as a gas torch for example.
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-Therefore, the first step consist in defining an ''[[doc:user:elements:general:def_element_properties|ElementProperties]]'', as+Therefore, the first step consist in defining an ''[[doc:user:elements:general:materials|MaterialProperties]]'', as
  
   mat = materset.define(no, matType )   mat = materset.define(no, matType )
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 ^   Name                                          ^     Description       ^  Dependency ^ ^   Name                                          ^     Description       ^  Dependency ^
 | ''CONV_COEF'' | Convection coefficient |  TM / TO  | | ''CONV_COEF'' | Convection coefficient |  TM / TO  |
-| ''TEMP_FLUIDE''  | Temperature of the fluid |  time |+| ''TEMP_FLUIDE''  | Temperature of the fluid |  TM  |
 | ''CONV_KX'' | Dimension of the rectangle in the first direction (Aligned on the local X Axis) |  TM  | | ''CONV_KX'' | Dimension of the rectangle in the first direction (Aligned on the local X Axis) |  TM  |
-| ''CONV_KY''  | Dimension of the rectangle in the first direction (Aligned on the local Y Axis) |  TM|+| ''CONV_KY''  | Dimension of the rectangle in the first direction (Aligned on the local Y Axis) |  TM  |
 | ''HEATFLUX_NUM_AX_X'' | Number of the X Axis (Line object  in the CurveSet)  |  -  | | ''HEATFLUX_NUM_AX_X'' | Number of the X Axis (Line object  in the CurveSet)  |  -  |
-| ''HEATFLUX_NUM_AX_Z''  | Number of the Z Axis (Line object in the CurveSet) (optional) | - |+| ''HEATFLUX_NUM_AX_Z''  | Number of the Z Axis (Line object in the CurveSet) (optional) |  -  |
  
 ==== GaussianHConvectionMaterial ==== ==== GaussianHConvectionMaterial ====
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 ^   Name                                          ^     Description       ^  Dependency ^ ^   Name                                          ^     Description       ^  Dependency ^
 | ''CONV_COEF'' | Convection coefficient |  TM / TO  | | ''CONV_COEF'' | Convection coefficient |  TM / TO  |
-| ''TEMP_FLUIDE''  | Temperature of the fluid |  time |+| ''TEMP_FLUIDE''  | Temperature of the fluid |  TM  |
 | ''CONV_KX'' | Distribution characteristic length in X local direction |  TM  | | ''CONV_KX'' | Distribution characteristic length in X local direction |  TM  |
-| ''CONV_KY''  | Distribution characteristic length in X local direction |  TM|+| ''CONV_KY''  | Distribution characteristic length in X local direction |  TM  |
 | ''HEATFLUX_NUM_AX_X'' | Number of the X Axis (Line object  in the CurveSet)  |  -  | | ''HEATFLUX_NUM_AX_X'' | Number of the X Axis (Line object  in the CurveSet)  |  -  |
-| ''HEATFLUX_NUM_AX_Z''  | Number of the Z Axis (Line object in the CurveSet) (optional) | - | +| ''HEATFLUX_NUM_AX_Z''  | Number of the Z Axis (Line object in the CurveSet) (optional) |  -  | 
-| ''HEATFLUX_RESCALE'' | parameter activating the rescale algorithm \\ (to ensure the total heat given by the load is received by the system even with coarse mesh) | - | +| ''HEATFLUX_RESCALE'' | parameter activating the rescale algorithm \\ (to ensure the total heat given by the load is received by the system even with coarse mesh) |  -  | 
  
 ==== LogNormHConvectionMaterial ==== ==== LogNormHConvectionMaterial ====
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 ^   Name                                          ^     Description       ^  Dependency ^ ^   Name                                          ^     Description       ^  Dependency ^
 | ''CONV_COEF'' | Convection coefficient |  TM / TO  | | ''CONV_COEF'' | Convection coefficient |  TM / TO  |
-| ''TEMP_FLUIDE''  | Temperature of the fluid |  time |+| ''TEMP_FLUIDE''  | Temperature of the fluid |  TM  |
 | ''CONV_KX'' | Distribution characteristic length in X local direction |  TM  | | ''CONV_KX'' | Distribution characteristic length in X local direction |  TM  |
-| ''CONV_KY''  | Distribution characteristic length in Y local direction |  TM|+| ''CONV_KY''  | Distribution characteristic length in Y local direction |  TM  |
 | ''HEATFLUX_NUM_AX_X'' | Number of the X Axis (Line object  in the CurveSet)  |  -  | | ''HEATFLUX_NUM_AX_X'' | Number of the X Axis (Line object  in the CurveSet)  |  -  |
-| ''HEATFLUX_NUM_AX_Z''  | Number of the Z Axis (Line object in the CurveSet) (optional) | - | +| ''HEATFLUX_NUM_AX_Z''  | Number of the Z Axis (Line object in the CurveSet) (optional) |  -  | 
-| ''HEATFLUX_RESCALE'' | parameter activating the rescale algorithm \\ (to ensure the total heat given by the load is received by the system even with coarse mesh) | - | +| ''HEATFLUX_RESCALE'' | parameter activating the rescale algorithm \\ (to ensure the total heat given by the load is received by the system even with coarse mesh) |  -  | 
  
 ==== CombineHConvectionMaterial ==== ==== CombineHConvectionMaterial ====
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 | ''CONV_COEF'' | Convection coefficient |  TM / TO  | | ''CONV_COEF'' | Convection coefficient |  TM / TO  |
 | ''TEMP_FLUIDE''  | Temperature of the fluid |  TM  | | ''TEMP_FLUIDE''  | Temperature of the fluid |  TM  |
-| ''CONV_TYPE_XF''  | type of distribution for local upstream X direction (CONV_GAUSSIAN or CONV_LOGNORM)no default | - | +| ''CONV_TYPE_XF''  | type of distribution for local upstream X direction (CONV_GAUSSIAN or CONV_LOGNORM)no default |  -  | 
 | ''CONV_TYPE_XR''  | type of distribution for local upstream X direction  (CONV_GAUSSIAN or CONV_LOGNORM) no default |  -  |  | ''CONV_TYPE_XR''  | type of distribution for local upstream X direction  (CONV_GAUSSIAN or CONV_LOGNORM) no default |  -  | 
 | ''CONV_TYPE_Y''   | type of distribution for local Y direction   (CONV_GAUSSIAN or CONV_LOGNORM) no default |  -  |  | ''CONV_TYPE_Y''   | type of distribution for local Y direction   (CONV_GAUSSIAN or CONV_LOGNORM) no default |  -  | 
doc/user/elements/boundaries/convection.1785338966.txt.gz · Last modified: by papeleux
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