Space-Dependent Line Plots

Space-dependent line plots are controlled in Spatial tab widget.

A variety of quantities can be displayed as a function of position. Options for the position variable are:

• Radius
• Zone index
• Mass

Because HELIOS is a Lagrangian hydrodynamics code, the mass in a given volume element does not change with time. So when plotting results as a function of either Zone index or Mass, the volume element positions along the x-axis are the same at all times.

The quantities available for plotting will depend on the parameters used during the HELIOS simulation.

To select simulations times, either:

• Click on Plot selected times and select one or more times from the list of times. Data for all the times selected will be displayed on a single plot; or
• Click on Cycle with step size and enter a non-zero number in the box. The number should be less than the total number of time steps in the data file. The data will be displayed one time step at a time with the selected number of time steps between each plot.

In the latter case, the simulation time displayed on the plot is changed using the up and down arrow keys.

After a selection has been made, click on the Plot button. An example is shown below.

If the atomic level populations have been written out for a HELIOS collisional-radiative (CR) calculation, they will be listed in a separate box below the main box. Clicking in the populations box will cause the times for which populations are available to be displayed. The population of a selected individual leve can be plotted.

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