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Stability estimates of solutions to extremal problems for a nonlinear convection-diffusion-reaction equation

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Abstract

We consider an identification problem for a stationary nonlinear convection–diffusion–reaction equation in which the reaction coefficient depends nonlinearly on the concentration of the substance. This problem is reduced to an inverse extremal problem by an optimization method. The solvability of the boundary value problem and the extremal problem is proved. In the case that the reaction coefficient is quadratic, when the equation acquires cubic nonlinearity, we deduce an optimality system. Analyzing it, we establish some estimates of the local stability of solutions to the extremal problem under small perturbations both of the quality functional and the given velocity vector which occurs multiplicatively in the convection–diffusion–reaction equation.

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Authors and Affiliations

  1. Institute of Applied Mathematics, ul. Radio 7, Vladivostok, 690041, Russia

    G. V. Alekseev & R. V. Brizitskii

  2. Far Eastern Federal University, ul. Sukhanova 8, Vladivostok, 690041, Russia

    G. V. Alekseev, R. V. Brizitskii & Zh. Yu. Saritskaya

Authors
  1. G. V. Alekseev
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  2. R. V. Brizitskii
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  3. Zh. Yu. Saritskaya
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Correspondence to G. V. Alekseev.

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Original Russian Text © G.V. Alekseev, R.V. Brizitskii, Zh.Yu. Saritskaya, 2016, published in Sibirskii Zhurnal Industrial’noi Matematiki, 2016, Vol. XIX, No. 2, pp. 3–16.

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Alekseev, G.V., Brizitskii, R.V. & Saritskaya, Z.Y. Stability estimates of solutions to extremal problems for a nonlinear convection-diffusion-reaction equation. J. Appl. Ind. Math. 10, 155–167 (2016). https://doi.org/10.1134/S1990478916020010

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  • DOI: https://doi.org/10.1134/S1990478916020010

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