ON DISCRETE SHAPE GRADIENTS OF BOUNDARY TYPE FOR PDE-CONSTRAINED SHAPE OPTIMIZATION
文献类型：期刊论文
| 作者 | Gong, Wei3,4; Zhu, Shengfeng1,2 |
| 刊名 | SIAM JOURNAL ON NUMERICAL ANALYSIS
 |
| 出版日期 | 2021 |
| 卷号 | 59期号:3页码:1510-1541 |
| 关键词 | shape optimization shape gradient boundary formulation boundary correction a priori error estimate finite element |
| ISSN号 | 0036-1429 |
| DOI | 10.1137/20M1323898 |
| 英文摘要 | Shape gradients have been widely used in numerical shape gradient descent algorithms for shape optimization. The two types of shape gradients, i.e., the distributed one and the boundary type, are equivalent at the continuous level but exhibit different numerical behaviors after finite element discretization. To be more specific, the boundary type shape gradient is more popular in practice due to its concise formulation and convenience in combining with shape optimization algorithms but has lower numerical accuracy. In this paper we provide a simple yet useful boundary correction for the normal derivatives of the state and adjoint equations, motivated by their continuous variational forms, to increase the accuracy and possible effectiveness of the boundary shape gradient in PDE-constrained shape optimization. We consider particularly the state equation with Dirichlet boundary conditions and provide a preliminary error estimate for the correction. Numerical results show that the corrected boundary type shape gradient has comparable accuracy to that of the distributed one. Moreover, we give a theoretical explanation for the comparable numerical accuracy of the boundary type shape gradient with that of the distributed shape gradient for Neumann boundary value problems. |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; National Key Basic Research Program[2018YFB0704304] ; National Natural Science Foundation of China[11671391] ; National Natural Science Foundation of China[12071149] ; Science and Technology Commission of Shanghai Municipality[18dz2271000] ; Natural Science Foundation of Shanghai[19ZR1414100] ; Fundamental Research Funds for the Central Universities |
| WOS研究方向 | Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000674273400014 |
| 出版者 | SIAM PUBLICATIONS |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/59083]  |
| 专题 | 中国科学院数学与系统科学研究院 |
| 通讯作者 | Gong, Wei |
| 作者单位 | 1.East China Normal Univ, Shanghai Key Lab Pure Math & Math Practice, Shanghai 200241, Peoples R China 2.East China Normal Univ, Sch Math Sci, Shanghai 200241, Peoples R China 3.Chinese Acad Sci, Acad Math & Syst Sci, Natl Ctr Math & Interdisciplinary Sci, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math, State Key Lab Sci & Engn Comp, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Wei,Zhu, Shengfeng. ON DISCRETE SHAPE GRADIENTS OF BOUNDARY TYPE FOR PDE-CONSTRAINED SHAPE OPTIMIZATION[J]. SIAM JOURNAL ON NUMERICAL ANALYSIS,2021,59(3):1510-1541. |
| APA | Gong, Wei,&Zhu, Shengfeng.(2021).ON DISCRETE SHAPE GRADIENTS OF BOUNDARY TYPE FOR PDE-CONSTRAINED SHAPE OPTIMIZATION.SIAM JOURNAL ON NUMERICAL ANALYSIS,59(3),1510-1541. |
| MLA | Gong, Wei,et al."ON DISCRETE SHAPE GRADIENTS OF BOUNDARY TYPE FOR PDE-CONSTRAINED SHAPE OPTIMIZATION".SIAM JOURNAL ON NUMERICAL ANALYSIS 59.3(2021):1510-1541. |
入库方式： OAI收割
来源：数学与系统科学研究院
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