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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2503.10487 |
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| _version_ | 1866908266593779712 |
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| author | Li, Jiwei Qiu, Lingyun Wang, Zhongjing Yu, Hui Zheng, Siqin |
| author_facet | Li, Jiwei Qiu, Lingyun Wang, Zhongjing Yu, Hui Zheng, Siqin |
| contents | In this work, we contribute to the broader understanding of inverse problems by introducing a versatile multiscale modeling framework tailored to the challenges of sediment concentration estimation. Specifically, we propose a novel approach for sediment concentration measurement in water flow, modeled as a multiscale inverse medium problem. To address the multiscale nature of the sediment distribution, we treat it as an inhomogeneous random field and use the homogenization theory in deriving the effective medium model. The inverse problem is formulated as the reconstruction of the effective medium model, specifically, the sediment concentration, from partial boundary measurements. Additionally, we develop numerical algorithms to improve the efficiency and accuracy of solving this inverse problem. Our numerical experiments demonstrate the effectiveness of the proposed model and methods in producing accurate sediment concentration estimates, offering new insights into sediment concentration measurement in complex environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_10487 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Sediment Concentration Estimation via Multiscale Inverse Problem and Stochastic Homogenization Li, Jiwei Qiu, Lingyun Wang, Zhongjing Yu, Hui Zheng, Siqin Numerical Analysis Analysis of PDEs 35B27, 35R30, 76M50 In this work, we contribute to the broader understanding of inverse problems by introducing a versatile multiscale modeling framework tailored to the challenges of sediment concentration estimation. Specifically, we propose a novel approach for sediment concentration measurement in water flow, modeled as a multiscale inverse medium problem. To address the multiscale nature of the sediment distribution, we treat it as an inhomogeneous random field and use the homogenization theory in deriving the effective medium model. The inverse problem is formulated as the reconstruction of the effective medium model, specifically, the sediment concentration, from partial boundary measurements. Additionally, we develop numerical algorithms to improve the efficiency and accuracy of solving this inverse problem. Our numerical experiments demonstrate the effectiveness of the proposed model and methods in producing accurate sediment concentration estimates, offering new insights into sediment concentration measurement in complex environments. |
| title | Sediment Concentration Estimation via Multiscale Inverse Problem and Stochastic Homogenization |
| topic | Numerical Analysis Analysis of PDEs 35B27, 35R30, 76M50 |
| url | https://arxiv.org/abs/2503.10487 |