The Space Charge Density Coupling multiphysics coupling () computes the local space charge based on local concentrations and species charges in a Chemical Species Transport interface. The computed space charge is then added as a contribution to the Poisson equation in an Electrostatics interface. The charge is added in the same way as a Space Charge Density feature does.

Specify the Chemical Species Transport interface in the Source list and the Electrostatics interface in the Destination list.