Integration adjoint

New adjoint optimisation and tools

A set of libraries and executables creating a workflow for performing gradient-based optimisation loops. The main executable (adjointOptimisationFoam) solves the flow (primal) equations, followed by the adjoint equations and, eventually, the computation of sensitivity derivatives.

Current functionality supports the solution of the adjoint equations for incompressible turbulent flows, including the adjoint to the Spalart-Allmaras turbulence model and the adjoint to the nutUSpaldingWallFunction, [1], [2].

Sensitivity derivatives are computed with respect to the normal displacement of boundary wall nodes/faces (the so-called sensitivity maps) following the Enhanced Surface Integrals (E-SI) formulation, [3].

The software was developed by PCOpt/NTUA and FOSS GP, with contributions from

• Dr. Evangelos Papoutsis-Kiachagias,
• Konstantinos Gkaragounis,
• Professor Kyriakos Giannakoglou,
• Andy Heather

and contributions in earlier version from

• Dr. Ioannis Kavvadias,
• Dr. Alexandros Zymaris,
• Dr. Dimitrios Papadimitriou

[1] A.S. Zymaris, D.I. Papadimitriou, K.C. Giannakoglou, and C. Othmer. Continuous adjoint approach to the Spalart-Allmaras turbulence model for incompressible flows. Computers & Fluids, 38(8):1528–1538, 2009.

[2] E.M. Papoutsis-Kiachagias and K.C. Giannakoglou. Continuous adjoint methods for turbulent flows, applied to shape and topology optimization: Industrial applications. 23(2):255–299, 2016.

[3] I.S. Kavvadias, E.M. Papoutsis-Kiachagias, and K.C. Giannakoglou. On the proper treatment of grid sensitivities in continuous adjoint methods for shape optimization. Journal of Computational Physics, 301:1–18, 2015.

Integration

Integration into the official OpenFOAM release by OpenCFD

changed milestone to %v1906

By Andrew Heather on 2019-06-17T13:15:05 (imported from GitLab project)

added Ready contribution enhancement feature integration: third party library post-processing solver labels

added 8 commits

• 98c651d8...de3091fc - 7 commits from branch develop
• 61e37526 - CONTRIB: New adjoint optimisation and tools

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By Andrew Heather on 2019-06-19T07:42:01 (imported from GitLab project)

added 1 commit

• ed13f2b0 - CONTRIB: New adjoint optimisation and tools

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By Andrew Heather on 2019-06-19T07:44:17 (imported from GitLab project)

added 1 commit

• 32b7d7c2 - CONTRIB: New adjoint optimisation and tools

Compare with previous version

By Andrew Heather on 2019-06-19T21:04:07 (imported from GitLab project)

mentioned in commit b8ab49ef250929d088dbabf60aedf31b69374929

By Andrew Heather on 2019-06-19T21:07:00 (imported from GitLab project)

merged

By Andrew Heather on 2019-06-19T21:07:00 (imported from GitLab project)