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arXiv 2108.12919math.APmath.OC
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粘弹性半可压缩流体流动的最优控制

Optimal control of flows of viscoelastic semi-compressible fluids

Tomáš Roubíček

摘要:

具有双线性非线性项的半线性抛物型系统有着广泛的应用,其最优控制得到了相对简单的最优性条件。一个例子是用于均匀流体的不可压缩纳维尔-斯托克斯系统,然而,在此将其修改为物理上合理的略微(所谓的"半“)可压缩液体而不是完全可压缩气体的模型。一个最优控制优化问题也被认为是在边界上的压力,并在简单的变体,分析,至于唯一性的控制到状态的映射和一阶最优性条件在2维的情况下,并概述了在一个非简单的变体为3维的情况下。其他一些双线性抛物系统,如Cahn-Hilliard扩散或磁流体力学,可以类似地处理。

英文摘要:

Semilinear parabolic systems with bi-linear nonlinearities cover a lot of applications and their optimal control leads to relatively simple optimality conditions. An example is the incompressible Navier-Stokes system for homogeneous fluids, which is however here modified towards a physically reasonable model of slightly (so-called ``semi'') compressible liquids rather than fully compressible gases. An optimal control problem optimizing also pressure on the boundary is considered and, in the simple variant, analysed as far as uniqueness of the control-to-state mapping and 1st-order optimality conditions in the 2-dimensional case and outlined in a nonsimple variant for the 3-dimensional case. Some other bi-linear parabolic systems as Cahn-Hilliard diffusion or magneto-hydrodynamics can be treated analogously.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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