Point Heat Source

This node, available for 3D components, models a heat source (or sink) that is so small that it can be considered to have no spatial extension.

In theory, the temperature in a point source in 3D is plus infinity (to compensate for the fact that the heat source does not have a spatial extension). The finite element discretization used in COMSOL Multiphysics returns a finite value, but that value must be interpreted in a weak sense.

Point Heat Source

Enter the Point heat source Qp in unit power. A positive Qp corresponds to heating while a negative Qp corresponds to cooling.

Frame Selection

This section is not available if the Specify heat source radius option is disabled. The settings are the same as for the Heat Source node and are described under Frame Selection.

Location in User Interface

Context menus

Heat Transfer in Solids>Points>Point Heat Source
Heat Transfer in Fluids>Points>Point Heat Source

Ribbon

Physics Tab with Heat Transfer in Solids or Heat Transfer in Fluids selected:
Points>Point Heat Source