Camberline Hicks-Henne Parameterization as design feature

[JanRotti]

Proposed Changes

I added a purely camberline driven parameterization to the design features.

Starting of from some reference airfoil geometry the thickness is fixed. The camberline is parameterized via hicks-henne bump functions.

• The parameterization always assumes a flat camberline when the bumps are set to 0.
• The deformation also works with blunt trailing edges
• The thickness distribution is kept from the reference geomentry
• The deformation should work for arbitrary airfoil placement (not tested); (except for specific constellations when the tangent at the trailing edge is 'more vertical than horizontal')

I tested this with two NACA configurations (one with blunt trailing edge), I did not add these files due to the file size of the meshes.

Related Work

X

Reasoning

It presents a simplified design feature to test optimization methods. This is not intended as serious design feature!

PR Checklist

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• I am submitting my contribution to the develop branch.
• My contribution generates no new compiler warnings (try with --warnlevel=3 when using meson).
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• I have added a test case that demonstrates my contribution, if necessary.
• I have updated appropriate documentation (Tutorials, Docs Page, config_template.cpp), if necessary.

[pcarruscag]

Thank you, can you add an example and regression test, maybe a version or a modification of one of the cases in TestCases/deformation

[JanRotti]

The failing of CodeFactor I feel is irrelevant, I tried copying the previous regression test syntax (white-space etc.), which is now producing the fail.

For the regression test, I do not quite understand what exactly I should test. When I run the test myself and inspect the deformed mesh, there is a slight bump at the trailing edge (expected behavior for the design definition). I currently have the values set simply from manually running SU2_DEF and inserting the the residual value after 10 iterations as reference. I used the triangular NACA0012 mesh from the Quickstart for the test.

[pcarruscag]

Good to go after addressing the comments 👍