Exporting boundary nodes

You can use Thermal Model Exchanger to export boundary nodes from Thermal Desktop into Simcenter 3D Space Systems Thermal.

In Thermal Desktop, the boundary Node allows you to impose a temperature constraint on your model. This type of node has the following settings:

Node type set to Boundary.
Override calculations by elements/surfaces check box selected.
Temperature value defined in the Initial Temp box. The value can be constant or time-dependent.

In Simcenter 3D a temperature constraint is only applied on 2D elements, element faces, and edges. The following table lists the different rules used by Thermal Model Exchanger (TMX) to convert the Thermal Desktop boundary nodes to the Simcenter 3D Temperature type of Constraint.


Boundary nodes location	Context	TMX actions
2D elements	All the nodes of a 2D element have the same temperature constraint.	Assigns the node temperature to the 2D element.
	The nodes of a 2D element do not have the same temperature constraint. The two end nodes of an element edge have the same temperature.	Assigns the node temperature to the element edge.
	The nodes of a 2D element do not have the same temperature constraint. The two end nodes of an element edge do not have the same temperature.	Computes the average temperature value and assigns it to the element edge. If the temperature is a time dependent table, TMX takes the first value of the table and uses it to calculate the average.
2D primitives	For Centered Nodes primitives, each primitive node will correspond to an element of the 2D mesh in Simcenter 3D.	Assigns the node temperature to the 2D element.
	For Edge Nodes primitives, the nodes can be on the primitive center, on the center of an edge or on the primitive corner. The primitive node corresponds to an edge in the Simcenter 3D mesh.	Assigns the node temperature to the edge.
	For Edge Nodes primitives, the nodes can be on the primitive center, on the center of an edge or on the primitive corner. The primitive node corresponds to a node in the Simcenter 3D mesh.	Assigns the node temperature to the connected edges.
3D primitives	All the nodes of the 3D primitive have the same temperature constraint.	Assigns the node temperature to all the elements of the Simcenter 3D mesh.
	The nodes of a primitive face have the same temperature constraint.	Assigns the node temperature to the corresponding face of the Simcenter 3D mesh.
	The nodes of a primitive face do not have the same temperature constraint.	Computes the average temperature value of the nodes attached to the primitive face and assigns it to the corresponding face of the Simcenter 3D mesh.