Use this node with 2D and 1D axisymmetric components to model domains with another thickness than the overall thickness that is specified in the interface Physical Model section. In 2D geometries, the pressure is assumed to be constant in the out-of-plane direction (the z direction with default spatial coordinate names). In 1D axisymmetric geometries the thickness represents the z direction.

Specify a value for the Thickness dz of the domain in the out-of-plane direction. This value replaces the overall thickness in the domains that are selected in the Domain Selection section, and is used to multiply some terms into the heat equation.