Define thermal conductance between surfaces

You define surface-to-surface thermal conductance by creating face pairs. You can define face pairs for surface-to-surface contact automatically or manually.

Define thermal conductance regions automatically

1. Choose Home tab→Loads and Conditions group→Surface-to-Surface Thermal Conductance .

2. In the Surface-to-Surface Thermal Conductance dialog box, from the Type list, select Automatic Pairing.

3. In the Automatic Face Pair Creation group, click Create Face Pairs .

4. In the Create Automatic Face Pairs dialog box: (Optional) Specify a Face Pair Search Subset.In the Preview group, click Preview to view the face pairs, and if necessary, modify the distance tolerance to generate more or fewer pairs.Select a Grouping option.For more information, see Create Automatic Face Pairs dialog box.

5. Click OK to return to the Surface-to-Surface Thermal Conductance dialog box.

6. (Optional) In the Contact Smoothing group, select or create a Surface Smoothing modeling object to specify the method to use to improve the contact stress and pressure accuracy for axisymmetric, or nearly axisymmetric, surfaces. Three smoothing techniques are available: circumferential, spherical, and toroidal. If you are creating a new modeling object, in the Surface Smoothing dialog box, select the appropriate method and then select the points that define the region through which to apply the smoothing. For more information, see Surface Smoothing dialog box (Abaqus).

7. In the Contact Type group, select whether you want to define thermal conductance and/or mechanical contact. To define thermal conductance, select the Thermal Conductance check box. To define mechanical contact, select the Mechanical Contact check box.

8. If you selected the Thermal Conductance check box, in the Thermal Contact group, do the following.From the Conductance Dependency list, select whether you want to model the conductive heat transfer as a function of clearance, pressure, or clearance and pressure.Specify the field or fields to define the conductance dependency. For more information, see Fields.

9. If you selected the Mechanical Conductance check box, in the Mechanical Contact group, select or create a Mechanical Contact Pair modeling object to define properties for the pairs of surfaces that may contact or interact during the analysis.For more information, see Defining contact pairs (Abaqus Structural and Thermal analyses).

10. Click OK.

Define thermal conductance regions manually

1. Choose Home tab→Loads and Conditions group→Surface-to-Surface Thermal Conductance .

2. In the Surface-to-Surface Thermal Conductance dialog box, from the type list, select Manual.

3. In the Source Region group, select the first set of surfaces or element faces.

4. In the Target Region group, select the second set of surfaces or element faces.

5. In the Conductance Dependency group, specify whether you want to model the conductive heat transfer as a function of clearance, pressure, or clearance and pressure.

6. (Optional) In the Contact Smoothing group, select or create a Surface Smoothing modeling object to specify the method to use to improve the contact stress and pressure accuracy for axisymmetric, or nearly axisymmetric, surfaces.In the Surface Smoothing dialog box, select the appropriate method and then select the points that define the region through which to apply the smoothing. Three smoothing techniques are available: circumferential, spherical, and toroidal. If you are creating a new modeling object, in the Surface Smoothing dialog box, select the appropriate method and then select the points that define the region through which to apply the smoothing. For more information, see Surface Smoothing dialog box (Abaqus).

7. In the Contact Type group, select whether you want to define thermal conductance and/or mechanical contact. To define thermal conductance, select the Thermal Conductance check box. To define mechanical contact, select the Mechanical Contact check box.

8. If you selected the Thermal Conductance check box, in the Thermal Contact group, do the following.From the Conductance Dependency list, select whether you want to model the conductive heat transfer as a function of clearance, pressure, or clearance and pressure.Specify the field or fields to define the conductance dependency. For more information, see Fields.

9. If you selected the Mechanical Conductance check box, in the Mechanical Contact group, select or create a Mechanical Contact Pair modeling object to define properties for the pairs of surfaces that may contact or interact during the analysis. For more information, see Defining contact pairs (Abaqus Structural and Thermal analyses).

10. Click OK.

Learn more

Surface-to-Surface Thermal Conductance (Abaqus)

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