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Subgrid scale eddy viscosity finite element method on optimal control of system governed by unsteady Oseen equations

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  • Gang Chen
  • Minfu Feng

Abstract

In this paper we focus on numerical analysis of finite element methods with stabilizations for the optimal control of system governed by unsteady Oseen equations. Using continuous equal-order finite elements for both velocities and pressure, two fully discrete schemes are proposed. Convective effects and pressure are stabilized by adding a subgrid scale eddy viscosity term and a pressure stabilized term. Convergence of the approximate solution is proved. A-Priori error estimates are obtained uniformly with Reynolds number, especially the $$L^2$$ L 2 -error estimates of numerical solution are independent of Reynolds number. The numerical experiments are shown to be consistent with our theoretical analysis. Copyright Springer Science+Business Media New York 2014

Suggested Citation

  • Gang Chen & Minfu Feng, 2014. "Subgrid scale eddy viscosity finite element method on optimal control of system governed by unsteady Oseen equations," Computational Optimization and Applications, Springer, vol. 58(3), pages 679-705, July.
    • Handle: RePEc:spr:coopap:v:58:y:2014:i:3:p:679-705
    DOI: 10.1007/s10589-014-9649-9
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    Cited by:

    1. Yılmaz, Fikriye, 2016. "Semi-discrete a priori error analysis for the optimal control of the unsteady Navier–Stokes equations with variational multiscale stabilization," Applied Mathematics and Computation, Elsevier, vol. 276(C), pages 127-142.

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