Line Mass Source

The feature models mass flow originating from a tube or line region with an infinitely small radius.


	This feature is only available in a limited set of add-on products. See https://www.comsol.com/products/specifications/ for more details on availability.

Selection

The 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 symmetry axis and the symmetry axis
3D	Edges

Species Source

Enter the source strength,

, for each species (SI unit: mol/(m·s)). A positive value results in species injection from the line into the computational domain, and a negative value means that the species is removed from the computational domain.

Line sources located on a boundary affect the adjacent computational domains. This effect makes the physical strength of a line source located in a symmetry plane twice the given strength.