Special Electrostatic Solver Settings

Simulation: SolverStart SimulationSpecials

Solver Type

Here the solver type is specified that is used in combination with tetrahedral meshing to solve the linear system of equations.

Auto: The solver type is automatically set  depending on the problem size (recommended).

Iterative: An iterative solver is used.

Direct: A direct solver is used.

Note: In combination with hexahedral meshing an iterative solver is always used and it is not possible or necessary to change this.

Solver order

This option allows to specify whether the electrostatic solver with tetrahedral mesh uses first-, second- or third-order accuracy. Second-order is the default due to its good compromise between accuracy and memory efficiency. However, if the structure is geometrically complex and therefore comes along with huge memory requirements, first-order is an alternative. On the other hand, third-order delivers a better solution for coarsely discretized problems.

Curvature...

This button opens the Special Mesh Properties dialog, where the curved element order can be specified.

Maximum iterations

The number of iterations performed by the linear solver is automatically limited by a number depending on the desired solver accuracy. If you would like to prescribe a fixed upper limit for number of linear iterations, deactivate the "Automatic" checkbox and enter a positive number in the edit field.

PECs without sources

Grounded: All PEC domains to which no source is assigned and electric boundary conditions are considered like fixed potentials with value 0. (default)

Floating: All PEC domains to which no source is assigned and electric boundary conditions are considered like floating potentials.

Open boundary

Charge Free: The potential at infinity is floating and charge free. For configurations with multiple conductors including the ground this is probably the correct choice.

Fixed: The potential value at infinity is fixed and can be chosen in the edit field below. Use this option if the ground conductor is not included in the simulation domain.

OK

Accepts the changes and closes the dialog box.

Cancel

Closes this dialog box without performing any further action.

Help

Shows this help text.