# Adjoint-based Optimal Flow Control for Compressible DNS

@article{Otero2016AdjointbasedOF, 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}, year={2016} }

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…

## 2 Citations

### Necessary conditions for distributed optimal control of linearized compressible Navier-Stokes equations with state constraint.

- Mathematics
- 2019

A Pontryagin maximum principle for an optimal control problem in three dimensional linearized compressible viscous flows is established using the Ekeland variational principle. The controls are…

## References

SHOWING 1-10 OF 20 REFERENCES

### Viscous Fluid Flow

- Engineering, Physics
- 1974

1 Preliminary Concepts 2 Fundamental Equations of Compressible Viscous Flow 3 Solutions of the Newtonian Viscous-Flow Equations 4 Laminar Boundary Layers 5 The Stability of Laminar Flows 6…

### Iterative optimization based on an objective functional in frequency-space with application to jet-noise cancellation

- PhysicsJ. Comput. Phys.
- 2011

### An Introduction to the Adjoint Approach to Design

- Mathematics
- 2000

An introduction to the subject, emphasising the simplicity of the ideas when viewed in the context of linear algebra, and examples of the use of adjoint methods for optimising the design of business jets are presented.

### Compressible-Flow DNS with Application to Airfoil Noise

- Engineering, Physics
- 2015

DNS are employed to study the noise reducing effect of trailing-edge noise serrations, indicating that the noise reduction is mainly due to a changed scattering mechanisms and not a change in the incidence turbulence field.

### Analysis, approximation, and computation of a coupled solid/fluid temperature control problem

- Physics
- 1994

### Adjoint analysis for noise control in a two-dimensional compressible mixing layer

- Physics, Environmental Science
- 2008

### Generalized Characteristic Boundary Conditions for Computational Aeroacoustics, Part 2

- Physics
- 2000

A previous paper introduced generalized characteristic boundary conditions for computational aeroacoustics (CAA), especially in focus of far-field nonreflecting conditions. This paper develops strict…

### Model predictive control: Review of the three decades of development

- Chemistry
- 2011

Three decades have passed since milestone publications by several industrialists spawned a flurry of research and industrial / commercial activities on model predictive control (MPC). This article…