Joule Heating dialog box (Thermal/SST/ESC/Multiphysics)

Type
Type	Specifies the type of joule heating simulation object to create.CurrentDefines the current for a set of elements.VoltageDefines the voltage for a set of elements.Electrical CouplingCreates an electrical coupling to join two disjointed meshes together.
Name
Name	Defines the simulation object's name.Description opens an editor that lets you type a description for the simulation object.
Destination Folder
Simulation Object Container	Specifies the folder in the Simulation Navigator in which the boundary condition will be stored. The list includes the root container and existing folders that you created using the New Folder command. Examples of a root container include Load Container, Constraint Container, and Simulation Object Container.
Folder Manager	Displays a hierarchical listing of existing folders. To create a new folder, right-click any level of the hierarchy and choose New Folder.
Region / Primary Region / Secondary Region
Region group appears when Type is set to Current or Voltage.Primary Region and Secondary Region groups appear when Type is set to Electrical Coupling.
Group Reference	Lets you apply the boundary condition to a group.For more information, see Group Reference options.
Select Object	Lets you select the polygon geometry or elements on which to specify the boundary condition.Element Selection Filtering appears when Type is set to Electrical Coupling.Excluded lets you remove individual entities from within your selected object. The software does not apply the simulation object to the excluded elements.Note: The Element Selection Filtering options are available when the Type Filter list on the Top Border bar is set to Elements.
Stacked Smart Selector Methods	Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Magnitude
Current	Appears when Type is set to Current.Specifies how the Current value is defined.TotalDefines the total current value to apply across all the selected elements.Per ElementDefines the current value to apply to each individual element.You can define a constant current in the Value box or as a varying function. For constant current, positive and negative value are accepted but a zero value is not accepted.
Voltage	Appears when Type is set to Voltage.You can define the magnitude with a constant value in the Value box or as a varying function. For more information, see Additional magnitude options.
Type	Appears when Type is set to Electrical Coupling.Specifies values for connecting the elements in the primary region to the closest elements in the secondary region.Total ResistanceSpecifies the total resistance in Ohms between the elements in the two regions. With this option, the final resistance calculated by the solver does not depend on the distance between the connected elements. You define the total resistance value as constant or dependent on time, temperature, heat flow rate, or thermal capacitance in the Electrical Resistance box.Conductance GapSpecifies the electrical resistivity of the material that fills the gap between the elements of the two regions. With this option, the final resistance calculated by the solver depends on the distance between the connected elements. You define the electrical resistivity value as constant or dependent on time, temperature, heat flow rate, or thermal capacitance in the Electrical Resistivity box.If the gap between the sets of elements is relatively large, there will be greater resistance.If the gap between the sets of elements is relatively small, there will be less resistance.
Additional Parameters
Appears when Type is set to Electrical Coupling.
Coupling Resolution	Controls the accuracy of the coupling. The software subdivides primary elements according to the Coupling Resolution before it determines conductances. With the One to One resolution, the solver calculates a single conductance from each primary element to the nearest secondary element.With the Coarse through Finest resolutions, the software subdivides each primary element into a progressively larger number of sub-elements.Although it may seem that the finer subdivision level would produce more accurate results, this is not always the case.For more information, see Specifying a Coupling Resolution.
Only Connect Overlapping Elements	Connects only primary sub-elements to secondary elements that overlap.For more information, see Using the Only Connect Overlapping Elements option.
Overlap Projection Direction	Appears when the Only Connect Overlapping Elements check box is selected.Specifies whether the normal of the primary or secondary elements is used to calculate the area of overlap.For more information, see Using the Overlap Projection Direction option.
Temperature Dependence Uses	Specifies which temperature is used to evaluate the magnitude when a temperature-varying function is used. You can define a temperature dependency in table fields, formula fields, 4D fields, and table of fields.Average TemperatureUses the average temperature of primary and secondary regions to evaluate the magnitude.Primary TemperatureUses the temperature of the primary region to evaluate the magnitude.For more information, see Temperature dependency for thermal and electrical couplings.

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Joule Heating

Temperature dependency for thermal and electrical couplings

Using the Overlap Projection Direction option

Using the Only Connect Overlapping Elements option

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Joule Heating dialog box (Thermal/SST/ESC/Multiphysics), Simcenter 3D 2021.1 Series

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