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arXiv 1801.01461math.NAcs.NA
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一种新的HDG方法用于对对流扩散PDE的Dirichlet边界控制 I:高正则性

A New HDG Method for Dirichlet Boundary Control of Convection Diffusion PDEs I: High Regularity

Oklahoma State University(俄克拉荷马州立大学);Universidad de Oviedo(奥维耶多大学);Missouri University of Science and Technology(密苏里科技大学)

Weiwei Hu, Mariano Mateos, John R. Singler, Yangwen Zhang

AI总结:

本文提出了一种新的混合不连续伽辽金方法,用于求解由椭圆对流扩散PDE支配的Dirichlet边界控制问题,建立了该问题的正则性结果和最优先验误差估计。

摘要:

我们提出了一种新的混合不连续伽辽金(HDG)方法,用于近似由椭圆对流扩散PDE支配的Dirichlet边界控制问题的解。即使在没有对流项的情况下,Dirichlet边界控制问题在理论上和数值上都是极具挑战性的。尽管文献中有很多关于泊松方程的Dirichlet边界控制问题的研究,但作者并未发现任何关于对流扩散Dirichlet控制问题的理论或数值分析工作。我们做出了两项贡献。首先,我们得到了Dirichlet控制问题的正则性结果。其次,在某些关于域和目标状态的假设下,我们得到了新HDG方法在二维情况下控制的最优先验误差估计。据作者所知,文献中尚无类似结果。我们还通过数值实验来展示HDG方法的性能。

英文摘要:

We propose a new hybridizable discontinuous Galerkin (HDG) method to approximate the solution of a Dirichlet boundary control problem governed by an elliptic convection diffusion PDE. Even without a convection term, Dirichlet boundary control problems are well-known to be very challenging theoretically and numerically. Although there are many works in the literature on Dirichlet boundary control problems for the Poisson equation, the authors are not aware of any existing theoretical or numerical analysis works for convection diffusion Dirichlet control problems. We make two contributions. First, we obtain well-posedness and regularity results for the Dirichlet control problem. Second, under certain assumptions on the domain and the target state, we obtain optimal a priori error estimates in 2D for the control for the new HDG method. As far as the authors are aware, there are no existing comparable results in the literature. We present numerical experiments to demonstrate the performance of the HDG method.

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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