Research articles

Optimal control for one complex dynamic system, II

Alla Albu, Vladimir Zubov<sup>a

a</sup> Computing Centre of Russian Academy of Sciences, Moscow, Russia

Abstract: The optimal control problem of the metal solidification in casting is considered. The process is modeled by a three-dimensional two-phase initial-boundary value problem of the Stefan type. A numerical algorithm for solving the direct problem was presented in the first part of this article, published in [1]. The optimal control problem was solved numerically using the gradient method. The gradient of the cost function was found with the help of conjugate problem. The discreet conjugate problem was posed with the help of Fast Automatic Differentiation technique.

Keywords and phrases: heat conduction, Stefan problem, finite-difference scheme, optimal control, gradient method, Fast Automatic Differentiation technique.

MSC: 49J20, 93C20

Received: 09.10.2008

Language: English

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