Plot graphs¶

The Plots card on the Results page plots the selected Attitudes' forces and flow data: custom graphs of any table column, force convergence, force distribution, centre of pressure and, where available, wake and acoustic data.

Before you start

Select a Programme and a Project in the header, and open Results under Visualisation & Data.
Most plots use the rows selected in the Results table. See select rows.
The Graphs axes come from the columns of the current table view. Load or create a table view with the values you want to plot first.

Plots aren't saved

Closing a plot dialog discards its settings and the graph. To keep a graph, add it to a report: the graphs and force distribution dialogs open inside the report editor, with an Add To Report or Add to Report button.

Which plot?¶

Button	Opens	Available when
Graphs	Line, scatter, bar and parallel coordinates charts of table columns	Always
Force Convergence	Live Forces: force, residual and probe histories	Always
Force Distribution	Force Distribution/Accumulation along an axis	At least one row selected
Centre of Pressure	Resultant force and line of action for chosen zones	Exactly one row selected ("Select one result only")
Wake Plots	Wake plane plots and weightings	Only on some Accounts. See wake plots
Acoustics	Microphone spectra from acoustic solves	Only if your Account has the Donor FRPM workflow, and at least one row selected

Hover over a graph to see its toolbar, with zoom, pan and download as PNG.

Graphs¶

Click Graphs.
Under Runs, choose Show selected runs (the default) or Show all complete runs. Show selected runs is disabled if no rows are selected.
Choose a Graph Type, then fill in its settings (below).
Click Plot.

Line/Scatter Chart¶

Setting	Notes
X Axis	Any column of the current table view, or Run Number (the default)
Y Axis	Any column of the current table view, or Run Number

If either axis is Run Number, you get a line chart with the runs in order. Otherwise you get a scatter of Y against X, with the markers coloured by the Y value. The title is <Y> vs. <X>.

Bar Chart¶

Setting	Notes
Force Columns	One or more columns of the current table view
Group By	Runs (the default) or Forces

Parallel Coordinates Chart¶

Setting	Notes
Force Columns	One or more columns of the current table view. Each becomes an axis
Type	Under Colour Scale Settings. The colour scale, for example Jet (the default), Viridis or RdBu
Axis	Under Colour Scale Settings. The chosen column that sets each line's colour

A table of the plotted runs, with a frozen Run Name column, appears under the chart. Drag along an axis on the chart to constrain it; the table follows.

If the table view has no columns to offer, the dialog shows "No force columns available in this setup."

Force Convergence¶

Force Convergence opens Live Forces, loaded with the selected Attitudes. It's the same view as on the Run page, so it's useful for running cases too.

Under Attitudes, check the loaded Attitudes. Click Add Attitude to add more, or the remove button to drop one.
In Choose Data File, pick the data. Only the files the case has are listed:
- Monitor Patch Data
- Residuals
- CCM Solve Log
- Force Patch Data followed by a number, one per force patch file
- Point Probes, then choose the probes in Select Point Probes
Choose the X-Axis and one or more Y-Axis variables. Each axis has a Logarithmic Scale toggle.
Optionally set a Moving Average Window (default 500). It's offered for Force Patch Data, Monitor Patch Data and Point Probes once an x-axis is chosen.
Click Plot. Clear and Clear All reset the graph.

Turn on Auto Reload to re-fetch the data every 30 seconds while a case is running. It isn't available for Point Probes.

Download CSV file(s) downloads one CSV per Attitude, named <case name>_<file>.csv, or <probe name>.csv for probes.

Force Distribution¶

Force Distribution plots how a force builds up along the model. The selected results need force distribution output.

Select one or more Attitudes, then click Force Distribution.

Choose the settings:

Setting	Options
Direction	x-axis, y-axis or z-axis: the axis the distribution is plotted along
Force Representation	Force (F), Coefficient (C) or Area Coefficient (CA)
Force Direction	x, y or z, shown as e.g. `Fx`, `Cz` or `CAy`
Data	distribution or accumulation
Show Deltas	With more than one Attitude selected. Then choose the Baseline
Components	The force distribution zones to plot

Optionally turn on any of the toggle buttons. They're highlighted when on:
- Inverse force values
- Align co-ordinates
- Reverse direction axis
- Switch axes
- Show lines of action
- Mirror values, when Direction is y-axis
- Reverse accumulation direction, when Data is accumulation
Click Plot. It's disabled ("No components selected.") until you choose a component.

Overlay a postpro image. Click PostPro Viewer, choose an image and click Add to Graph. Use Scale X, Scale Y, Translate X, Translate Y and Opacity under the graph to line it up, and Reset All to start again. Clear PostPro removes the overlays.

Download the data. Once the graph has data, Download csv file downloads one CSV with a column per field and Attitude, named force_distribution_<component>_<result names>.csv.

Centre of Pressure¶

Select one Attitude, then click Centre of Pressure.
Move the zones you want from Available Zones to Selected Zones. Each list has a Filter zones box and a select-all checkbox.
Click Calculate. It's disabled until at least one zone is selected.

Calculated Values shows the totals over the selected zones:

Group	Values
Force Direction	Drag, Sideforce, Lift
Moment Direction	Roll, Pitch, Yaw
Resultant	Force Magnitude (N), Unit Vector, Momentum About Origin (Nm)
Line of Action	Line of Action Point 1 (mm), Line of Action Point 2 (mm)

"Error loading Force Transcripts" or "Error loading Run Zones" means the force data for that Attitude couldn't be loaded.

Wake Plots¶

Wake plots are available on some Accounts. Contact support@bramblecfd.com to have them enabled for your Account.

When they're enabled, Wake Plots is enabled for selected Attitudes that include a wake grid. Otherwise it shows "No results selected." or "Wake Plots not available for this selection."

Acoustics¶

Acoustics plots microphone data from acoustic (Donor FRPM) Attitudes: choose an Attitude, microphones and PSD or SPL under Configure Plot, and download with Download CSV(s). See run an aeroacoustic simulation.