Abstract The work performed at AIRBUS Operations S.A.S on adjoint-based error estimation of functional outputs is presented. The ultimate goal of this technique aims at identifying areas where local mesh refinement and/or nodes displacement may be applied to get closer to grid convergence. The method also provides a correction term allowing to estimate the value of a given functional output if the grid were globally refined. The theoretical background is recalled and the two interpolation techniques implemented by way of prolongation operator are detailed. Also, improvements to the numerical method for the adjoint state are described. The adjoint-based correction is assessed for the lift and drag coefficients on two industrially relevant test cases, the DLR-F6Wing-Body and Wing-Body-Pylon-Nacelle configurations.
Adjoint–Based Correction of Aerodynamic Coefficients on Structured Multiblock Grids
ADIGMA - A European Initiative on the Development of Adaptive Higher-Order Variational Methods for Aerospace Applications ; 2 ; 355-368
2010-01-01
14 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Coarse Grid , Convergence History , Adjoint State , Dissipation Model , Functional Output Engineering , Engineering Fluid Dynamics , Astronomy, Astrophysics and Cosmology , Classical Continuum Physics , Aerospace Technology and Astronautics , Appl.Mathematics/Computational Methods of Engineering , Numerical and Computational Physics
Aerodynamic Design Optimization on Unstructured Grids with a Continuous Adjoint Formulation
British Library Conference Proceedings | 1997
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