Simultaneous single-step one-shot optimization with unsteady PDEs
Simultaneous single-step one-shot optimization with unsteady PDEs
复制标题
具有不稳定偏微分方程的同步单步一次性优化
DOI:
10.1016/j.cam.2015.07.033
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Q. Wang
中科院分区:
文献类型:
--
作者:
S. Günther;N.R. Gauger;Q. Wang
The single-step one-shot method has proven to be very efficient for PDE-constrained optimization where the partial differential equation (PDE) is solved by an iterative fixed point solver. In this approach, the simulation and optimization tasks are performed simultaneously in a single iteration. If the PDE is unsteady, finding an appropriate fixed point iteration is non-trivial. In this paper, we provide a framework that makes the single-step one-shot method applicable for unsteady PDEs that are solved by classical time-marching schemes. The one-shot method is applied to an optimal control problem with unsteady incompressible Navier–Stokes equations that are solved by an industry standard simulation code. With the Van-der-Pol oscillator as a generic model problem, the modified simulation scheme is further improved using adaptive time scales. Finally, numerical results for the advection–diffusion equation are presented.
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DOI:
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发表时间:
2010
期刊:
Optim. Methods Softw.
影响因子:
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作者:
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通讯作者:
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DOI:
--
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Software, environments, tools
影响因子:
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U. Naumann
DOI:
--
发表时间:
2009
期刊:
影响因子:
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作者:
E. Özkaya;N. Gauger
通讯作者:
N. Gauger