Line Mass Source
This feature requires at least one of the following licenses: Battery Design Module, CFD Module, Chemical Reaction Engineering Module, Corrosion Module, Electrochemistry Module, Electrodeposition Module, Fuel Cell & Electrolyzer Module, Microfluidics Module, Pipe Flow Module, or Subsurface Flow Module.
The Line Mass Source feature models mass flow originating from a tube region with infinitely small radius.
For the Reacting Flow in Porous Media, Diluted Species interface, which is available with the CFD Module, Chemical Reaction Engineering Module, or Battery Design Module, there are two nodes, one for the fluid flow (Fluid Line Source) and one for the species (Species Line Source).
Selection
The Line Mass Source feature is available for all dimensions, but the applicable selection differs between the dimensions.
Model Dimension
Applicable Geometrical Entity
2D
Points
2D Axisymmetry
Points not on the axis of symmetry
3D
Edges
Source Strength
The source Mass flux, , should be specified. A positive value results in mass being ejected from the line into the computational domain and a negative value means that mass is removed from the computational domain.
Line sources located on a boundary affect the adjacent computational domains. This, for example, has the effect that a line source located on a symmetry plane has twice the given strength.
Mass Sources for Fluid Flow in the COMSOL Multiphysics Reference Manual