Second-order adjoint-based sensitivity for hydrodynamic stability and control

  title={Second-order adjoint-based sensitivity for hydrodynamic stability and control},
  author={Edouard Boujo},
  journal={Journal of Fluid Mechanics},
  • E. Boujo
  • Published 1 August 2020
  • Mathematics
  • Journal of Fluid Mechanics
Abstract Adjoint-based sensitivity analysis is routinely used today to assess efficiently the effect of open-loop control on the linear stability properties of unstable flows. Sensitivity maps identify regions where small-amplitude control is the most effective, i.e. yields the largest first-order (linear) eigenvalue variation. In this study an adjoint method is proposed for computing a second-order (quadratic) sensitivity operator, and applied to the flow past a circular cylinder, controlled… 
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FLM volume 920 Cover and Front matter
  • Journal of Fluid Mechanics
  • 2021


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