Optimal control of volume-preserving mean curvature flow

Optimal control of volume-preserving mean curvature flow
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保体积平均曲率流的优化控制

DOI:
10.1016/j.jcp.2021.110373
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发表时间:
2021
影响因子:
4.1
通讯作者:
Walker, Shawn W.
Walker, Shawn W.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Laurain, Antoine;Walker, Shawn W.

文献摘要

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我们开发了一个框架和数值方法来控制几何驱动流的全时空管。考虑了具有体积约束的曲线或曲面的平均曲率流的最优控制问题,其中控制参数作为运动律中的强制项。通过最小化适当的跟踪型成本函数来实现流的轨迹的控制。通过对平均曲率流产生的时空管进行形式灵敏度分析,得到了代价泛函的梯度。我们表明,管子的扰动可以用管子上满足抛物方程的横向场来描述。我们提出了一个数值算法来近似的最优控制,并在二维和三维展示了几个结果,证明了该方法的效率。
We develop a framework and numerical method for controlling the full space-time tube of a geometrically driven flow. We consider an optimal control problem for the mean curvature flow of a curve or surface with a volume constraint, where the control parameter acts as a forcing term in the motion law. The control of the trajectory of the flow is achieved by minimizing an appropriate tracking-type cost functional. The gradient of the cost functional is obtained via a formal sensitivity analysis of the space-time tube generated by the mean curvature flow. We show that the perturbation of the tube may be described by a transverse field satisfying a parabolic equation on the tube. We propose a numerical algorithm to approximate the optimal control and show several results in two and three dimensions demonstrating the efficiency of the approach.
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发表时间: 2001
期刊: arXiv: Analysis of PDEs
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