MultiLoop III - Tutorial 4

MultiLoop III - Tutorial 4MultiLoop III - Tutorial 4

Plotting on meshesPlotting on meshes

(Continued from Tutorial 3)(Continued from Tutorial 3)

Step 1: Generate the plot Step 1: Generate the plot datadata

• Compute tutorials 1,2 and 3Compute tutorials 1,2 and 3

• Edit the calculation dataEdit the calculation data

• Recalculate the responseRecalculate the response

• GoGo

A view of the grid after tutorial 3

From the “Calculate” menu, select “Colours”

The “Save Calculation Data” dialogue appears.

Save: Field data and stream potential coefficients will be saved to enable plotting later.

Plot: Field data and stream potentials will be plotted as the calculations are being done.

Apply to the inductive limitApply to the resistive limit

Apply to every nth time step

Apply to the “gated stream potentials”.This option allows the stream potentialthat is responsible for the fields at eachgate to be saved/viewed.

If the colour table is not updated, the colours may not reflect thedynamic range of the stream potential currently being plotted. If it is updated, then the relative magnitudes of the stream potentialswill be lost. During time stepping, not updating the colour tablemeans that the late time stream potentials will be a uniform colour,because colour range will have been set by the first plot.

Apply to the primary field

Select all save and plot options.Click “OK” when done.

The plotting coefficients must be computed beforethe plots can be made. From the “Calculate”menu, select “Response”

The calculation was done in Tutorial 1. The modelhas not changed, so the computed scattering data are still valid.

Click “Yes” to recalculate and generate the plotting data.

The calculationrestarts.

Because “Plot” was selected in the “Save Calculation Data” dialogue, the stream potentials are plotted as they are computed.

…plots are updated as new data and cpu cycles become available

The first plots will be of the inductive and resistive limits.… Thenplots for the time steps will be generated.

At late times, the current will diffuse away from the loop.

The final step is to compute and plot the gated stream potentials. When the calculation is done, a dialogue box will appear. Click “OK”.

Step 2:Step 2:

• Select “Plot”, “Colours” from the Select “Plot”, “Colours” from the menumenu

• The “Mesh Colouring Options” The “Mesh Colouring Options” dialogue appearsdialogue appears

• Select the colouring option.Select the colouring option.

• GoGo

To view the colour plots, select “Plot” and“Colours” from the main menu.

The “Mesh Colouring Options”dialogue appears

Click here to view the primary field normal to the mesh

Click here to ensure thatthe colour table applies

Click “Plot” to show theplot.

Click here to view the the inductive limit excitation

Click here to ensure thatthe colour table applies

Click “Plot” to show theplot.

To plot a the stream potential ata time step, select “Time StepExcitation”

A dialogue will appear with the available time steps (impulsive gates)available for plotting. Select the time to plot, click “OK”

Click “Plot” when done

Click the time select button, setat 0.00E+00

The selected stream potential is plotted and the time select button displays the time being plotted

The procedure for plotting the gated stream potential is similar. Click the“Gated Excitation”button.

Then select the gateby clicking on the gateselector and selectthe gate from thedialogue.

The gated streampotential will be plotted, and the selected gate will beshown in the gateselector.