Across Gap Convection Coupling options

Name
Name	Lets you specify a name for the simulation object.Description opens an editor that lets you type a description for the constraint.
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.
Primary Region
Group Reference	Lets you apply the primary region to a group.For more information, see Group Reference options.
Select Object	Lets you select the primary set of elements.Element Selection Filtering lets you limit your element selection to the FE entity you select from the Filter Type list:0D Elements, 1D Elements, or 2D Elements lets you select only elements of that order.Element Edges lets you select 1D elements, the edges of 2D, or 3D elements.Element Faces lets you select 2D elements or the faces of 3D elements.Caution: You must select Element from the main selection Type Filter list to use the Element Selection Filtering options.Excluded lets you remove individual entities from within your selected object.
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.
Secondary Region
Group Reference	Lets you apply the secondary region to a group.For more information, see Group Reference options.
Select Object	Lets you select secondary set of elements.Excluded lets you remove individual entities from within your selected object.
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.
Parameters
Type	Specifies how the software models the convection.Between Large Parallel Horizontal PlatesCalculates heat transfer inside a closed cavity between two closely spaced parallel horizontal surfaces. The other surfaces of the cavity are assumed to be adiabatic.Between Large Parallel Inclined PlatesCalculates heat transfer inside a closed cavity between two closely inclined spaced parallel surfaces. The other surfaces of the cavity are assumed to be adiabatic.Between Concentric SpheresCalculates heat transfer between the inner surface of a larger sphere and the outer surface of a smaller concentric sphere. The space between the surfaces is assumed to be relatively small compared to the diameters of the spheres. Enter a value for the diameter of the outer sphere in the Outer Sphere Diameter box and a value for the diameter of the inner sphere in the Inner Sphere Diameter.Between Long Concentric Horizontal CylindersCalculates heat transfer between the inner surface of a larger cylinder and the outer surface of a smaller coaxial cylinder. Enter a value for the diameter of the outer cylinder in the Outer Cylinder Diameter box and a value for the diameter of the inner cylinder in the Inner Cylinder Diameter.
Characteristic Information	Appears when Type is set to Between Large Parallel Inclined Plates or Between Large Parallel Horizontal Plates.Specifies how the solver applies the correlation to the selected geometry:Calculate from Element SetUses the selected regions to control the calculation of the convective heat transfer. Select this option if your model uses an accurate representation of the two surfaces.SpecifyAllows you to control the calculation of convective heat transfer. Enter a value for the length of the cavity along the direction of flow in the Length box, a value for the gap between the plates in the Gap box, and specify the vector perpendicular to the plates using Specify Vector .
Multiplier	Sets a value for the multiplier to adjust the correlation for features such as cooling fins or other factors affecting convection. For more information, see Additional magnitude options.
Coupling Resolution	Specifies the accuracy of the coupling. The software subdivides primary elements according to the Coupling Resolution before it determines conductances. One to OneCalculates a single conductance from each primary element to the nearest secondary element.Coarse through FinestSubdivides 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.
Environment
Fluid Material	Specifies the material for the surrounding fluid. You can select air, water, or choose another fluid material by using Specify.Select FluidLets you select a fluid material from the list of materials assigned to the model, or click Choose material to define a new fluid material.

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Create a Thermal Coupling — Convection

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Thermal Coupling — Convection

Specifying a Coupling Resolution

Using the Only Connect Overlapping Elements option

Using the Overlap Projection Direction option

Thermal Coupling — Convection types

Across gap coupling convection correlations

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Across Gap Convection Coupling options, Simcenter 3D 2021.1 Series

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