Simulation data
The simulation data object defines the following parameters for the next simulation:
- The start and end times of the simulation (or simulation phases)
- The type of simulation (periodic or dynamic)
- Some configuration parameters for IDA Solver, such as step size
The main simulation data are available via Simulation data dialog.
The default dialog contains the following fields:
Calculation tab
- Type of integration
- Dynamic or periodic (available only for applications that support periodic simulations).
- From time (or From date)
- The start time of the calculation phase (in the specified time units).
For calendar-based applications, this field contains the start date, and the dialog also contains a Calendar... button.
- To time (or To date)
- The end time of the calculation phase (in the specified time units).
For calendar-based applications, this field contains the end date and the dialog also contains a Calendar... button.
- Output step
- If the output step is set to non-zero, IDA Solver will store the dynamic results with the given time step. Otherwise (default case), IDA Solver will store all calculated dynamic results.
Startup tab
For applications that support startup phase, this tab contains the type and the start and end times of the startup phase of simulation. This tab is not shown for periodic simulation.
Advanced tab
- Tolerance
- This number determines how accurately equations are to be solved.
- Minimal timestep
- The smallest timestep to be taken under normal conditions, in hours.
- Maximal timestep
- The largest timestep to be taken, in hours.
- Maximum number of periods
- Maximal number of periods in the periodic phase of the simulation.
- Tolerance for periodicity
- Tolerance for periodicity in a periodic simulation.
Option tab
Additional options supported by IDA Solver. See IDA Solver User Guide for details.
The IDA applications may define different Simulation data dialogs, see Simulation data in applications.
The simulation data may be unavailable at the wizard level.
More solver parameters are available in the IDA Solver's configuration file ida.cfg in the application directory. The structure of the configuration file is described in IDA Solver User Guide.
Note that the solver configuration file is a part of the IDA application. Any change of parameters in this file will affect the simulation of all IDA systems in this application.