• Corpus ID: 119226941

Adjoint-based Optimal Flow Control for Compressible DNS

  title={Adjoint-based Optimal Flow Control for Compressible DNS},
  author={J. Javier Otero and Ati S. Sharma and Richard D. Sandberg},
  journal={arXiv: Computational Physics},
A novel adjoint-based framework oriented to optimal flow control in compressible direct numerical simulations is presented. Also, a new formulation of the adjoint characteristic boundary conditions is introduced, which enhances the stability of the adjoint simulations. The flow configuration chosen as a case study consists of a two dimensional open cavity flow with aspect ratio $L/H=3$ and Reynolds number $Re=5000$. This flow configuration is of particular interest, as the turbulent and chaotic… 

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