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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.03719 |
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| _version_ | 1866912285255008256 |
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| author | Bao, Gang Ma, Haoran Lai, Jun Li, Jingzhi |
| author_facet | Bao, Gang Ma, Haoran Lai, Jun Li, Jingzhi |
| contents | The Taylor expansion of wave fields with respect to shape parameters has a wide range of applications in wave scattering problems, including inverse scattering, optimal design, and uncertainty quantification. However, deriving the high order shape derivatives required for this expansion poses significant challenges with conventional methods. This paper addresses these difficulties by introducing elegant recurrence formulas for computing high order shape derivatives. The derivation employs tools from exterior differential forms, Lie derivatives, and material derivatives. The work establishes a unified framework for computing the high order shape perturbations in scattering problems. In particular, the recurrence formulas are applicable to both acoustic and electromagnetic scattering models under a variety of boundary conditions, including Dirichlet, Neumann, impedance, and transmission types. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_03719 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Shape Taylor expansion for wave scattering problems Bao, Gang Ma, Haoran Lai, Jun Li, Jingzhi Numerical Analysis Analysis of PDEs Differential Geometry 35Q61, 35J05, 35R30, 49J50, 78M50 The Taylor expansion of wave fields with respect to shape parameters has a wide range of applications in wave scattering problems, including inverse scattering, optimal design, and uncertainty quantification. However, deriving the high order shape derivatives required for this expansion poses significant challenges with conventional methods. This paper addresses these difficulties by introducing elegant recurrence formulas for computing high order shape derivatives. The derivation employs tools from exterior differential forms, Lie derivatives, and material derivatives. The work establishes a unified framework for computing the high order shape perturbations in scattering problems. In particular, the recurrence formulas are applicable to both acoustic and electromagnetic scattering models under a variety of boundary conditions, including Dirichlet, Neumann, impedance, and transmission types. |
| title | Shape Taylor expansion for wave scattering problems |
| topic | Numerical Analysis Analysis of PDEs Differential Geometry 35Q61, 35J05, 35R30, 49J50, 78M50 |
| url | https://arxiv.org/abs/2501.03719 |