To run the model, open floating.pro with Gmsh
and click on the "Run" button in the left panel.
Features addressed in this tutorial
Global quantities and their special shape functions (see picture above)
Computation of the energy dual, i.e. of the armature charge of the electrode
More on ONELAB parameters (flags, model options, check boxes, menus, ...)
This is a further step building on the electrostatic 2D model of a microstrip (tutorial 1).
We show in this tutorial how GetDP takes advantage of global quantities and the associated global basis functions
to reduce the number of unknowns
to deal with floating potentials
to compute efficiently the electrode charges,
which are the energy duals of the electrode voltages
to compute output quantities (charges, armature voltages, capacitances, ...)
that can be immediately used in a external circuit.