This node adds a heat flux q0, u for the upside heat flux and a heat flux q0, d for the downward heat flux to the right-hand side of Equation 6-4

For the convective heat flux, q0 is defined as:

To display this section add both a Heat Transfer in Thin Shells (htsh) and Moving Mesh (ale) interface (found under the Mathematics>Deformed Mesh branch when adding a physics interface). Then click the Show button () and select Advanced Physics Options.

The rest of the settings are the same as for the Out-of-Plane Heat Flux node as described under Frame Selection for About the Heat Transfer Interfaces.

General inward heat flux is selected by default. Enter a value or expression for the inward (or outward, if the quantity is negative) heat flux through the upside in the q0, u field.

Click the Convective heat flux button to specify an inward (or outward, if the quantity is negative) heat flux through the upside as hu ⋅ (Text, u − T).

Select a Heat transfer coefficient hu to control the type of convective heat flux to model: User defined (the default), External natural convection, Internal natural convection, External forced convection, or Internal forced convection. If convective flux is only required on the downside, use the default, which sets hu = 0.

For all of the options, enter an External temperature, Text, u. For User defined, enter a value or expression. Else, select an Ambient temperature defined in the Ambient Settings section of a Heat Transfer or Heat Transfer in Shells interface.

The rest of the settings are the same for the Out-of-Plane Heat Flux node, as described for the Heat Transfer interface under Convective Heat Flux.

The options in the Downside Inward Heat Flux section are the same as in the Upside Inward Heat Flux section except it applies to the downside instead of the upside.

Physics Tab with Heat Transfer in Thin Shells selected:
Boundaries>Heat Transfer in Thin Shells>Heat Flux