Discontinuities in post-processed twist and t/c distributions

Type of issue

What types of issue is it?

• Bugfix (non-breaking change which fixes an issue)

Description

The post-processed twist and t/c distributions that ADflow outputs sometimes have spurious discontinuities and jumps. This is related to the script jumping between the upper and lower trailing edges of the geometry, or some equivalent jump, while calculating the twist using the farthest two points in a section.

For examples, see the twist and t/c plots in:

• "RANS-Based Aerodynamic Shape Optimization of a Strut-Braced Wing with Overset Meshes" (https://arc.aiaa.org/doi/pdf/10.2514/1.C034934)
• "Undeflected Common Research Model (uCRM): An Aerostructural Model for the Study of High Aspect Ratio Transport Aircraft Wings" (https://arc.aiaa.org/doi/pdf/10.2514/6.2017-4456)

Expected behavior

There shouldn't be spurious discontinuities and jumps.

Start by locating the post-processing code that computes twist and t/c distributions, then trace the calculation using the farthest two points in each section. Compare how the script selects the upper and lower trailing edges and inspect the open pull request for existing work. Done means the generated distributions no longer contain spurious discontinuities or jumps.