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首页> 外文期刊>Journal of Computational Physics >COMPUTATIONS OF BOUNDARY OPTIMAL CONTROL PROBLEMS FOR AN ELECTRICALLY CONDUCTING FLUID
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COMPUTATIONS OF BOUNDARY OPTIMAL CONTROL PROBLEMS FOR AN ELECTRICALLY CONDUCTING FLUID

机译:导电流体的边界最优控制问题的计算

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We study four optimal control problems for an electrically conducting fluid. The control is the (normal) electrical current on the boundary of the flow domain. The objectives are to match a desired velocity field, or to match a desired electrical potential field, or to minimize the potential gradient, or to minimize the vorticity in the flow domain. We develop a systematic way to use the Lagrange multiplier rules to derive an optimality system of equations from which an optimal solution can be computed, Mixed finite element methods are used to find approximate solutions for the optimality systems of equations that characterize the optimal controls. A direct method and an iterative method are proposed for solving the discrete, nonlinear optimality systems of equations. Numerical results for several examples are presented. (C) 1996 Academic Press, Inc. [References: 13]
机译:我们研究了导电流体的四个最佳控制问题。控制是流域边界上的(正常)电流。目的是匹配期望的速度场,或者匹配期望的电势场,或者最小化电势梯度,或者最小化流域中的涡旋。我们开发了一种系统的方法,使用拉格朗日乘数规则来推导方程的最优系统,可以从中计算出最优解。混合有限元方法用于找到表征最优控制的方程的最优系统的近似解。提出了一种直接方法和一种迭代方法来求解离散的非线性最优方程组。给出了几个示例的数值结果。 (C)1996 Academic Press,Inc. [参考:13]

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