In this work, shape optimization problems in flows governed by the stationary and instationary Navier-Stokes equations are discussed. Building on the 'perturbation of identity' ansatz by Murat and Simon, a suitable framework for 2D and 3D optimal design problems is developed. In particular, for the instationary case, the Fréchet differentiability of the design-to-state operator for W^2,infty domain transformations is proved. An adjoint-based calculation of first and second order material derivatives is developed and the correlation to common parametrizations is discussed. Finally numerical results are presented.
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In this work, shape optimization problems in flows governed by the stationary and instationary Navier-Stokes equations are discussed. Building on the 'perturbation of identity' ansatz by Murat and Simon, a suitable framework for 2D and 3D optimal design problems is developed. In particular, for the instationary case, the Fréchet differentiability of the design-to-state operator for W^2,infty domain transformations is proved. An adjoint-based calculation of first and second order material derivat...
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