Simulation:
Solver
Start SimulationThe LF Time Domain Solver can be used to carry out the electromagnetic time domain simulations. At the moment, magnetoquasistatic approximations are available which can be employed without loosing too much accuracy within the calculation.
Mesh Type
In this drop down list you can specify the meshing method to use for the simulation. Currently the LF Time Domain solver supports only tetrahedral meshing.
Solver settings
Via the Store result in data cache checkbox you can indicate whether all models and results obtained during a parameter sweep or optimization are to be stored in subfolders or not. This feature will be available soon for the tetrahedral solver.
The Accuracy... button leads you to another dialog box where you can tune the accuracy settings for the solver of the linear equation systems and the nonlinear solver.
Simulation settings
In this frame you can determine the Simulation duration, that is the total length of the simulated process. The excitations (source and time evolution) can be specified in the Excitations... dialog box. Note that the currently set reference signal is associated with all source if no excitations are explicitly defined. By default this is a constant signal. If at least one non-constant excitation is defined, a hint will appear beneath the Simulation duration edit field. This hint shows the maximum (non-constant) signal length where all specified time delays are taken into account. This shall give you an idea of a reasonable simulation duration. Please note that constant signals have an infinite duration. The Simulation duration is always defined in the current time units.
Time step settings
In this frame you can determine whether the time step width is constant during the entire simulation or whether it is to be adapted during the simulation process according to the respective calculation results. In general, the Adaptive determination of the time step width is recommended. If you encounter problems like lengthy calculations because of seemingly small or large adaptive steps, it might be useful to check the Constant simulation option.
Appropriate settings concerning the (minimum or maximum) time step width, number of samples or error tolerance can be configured in the Properties... dialog box. Please note that all time related settings are always done in the current time units.
Adaptive mesh refinement
If adaptive mesh refinement is available, you can switch it on or off with the corresponding checkbox. The Properties... button leads you to a another dialog box where you can tune the refinement settings.
Start
Starts the LF time domain solver with the current settings.
StoreResultsInCache
Indicates if all models and results during a parameter sweep or optimization should be stored in subfolders or not.
Optimize
Opens the Optimization dialog box which allows you to prescribe goals with respect to which particular parameters can be optimized.
Par. Sweep
Opens the Parameter Sweep dialog box which allows you to define watches which are traced during several solver runs.
Acceleration...
Opens the acceleration dialog box to control the high performance options of the simulation run (e.g. CPU multithreading or Distributed Computing).
Specials
Opens a dialog box where you can configure special settings for the LF time domain solver.
Simplify Model...
Opens a dialog box with which the complexity of the model can be globally reduced.
Apply
Stores the current settings without closing the dialog box.
Close
Closes this dialog box without performing any further action.
Help
Shows this help text.
See also
LF Time Domain Solver Overview, Parameter Sweep, Optimizer, LF Time Domain Solver Specials