An Adaptive Angular Domain Compression Scheme For Solving Multiscale Radiative Transfer Equation
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866913493157937152 |
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| author | Song, Qinchen Fu, Jingyi Tang, Min Zhang, Lei |
| author_facet | Song, Qinchen Fu, Jingyi Tang, Min Zhang, Lei |
| contents | When dealing with the steady-state multiscale radiative transfer equation (RTE) with heterogeneous coefficients, spatially localized low-rank structures are present in the angular space. This paper introduces an adaptive tailored finite point scheme (TFPS) for RTEs in heterogeneous media, which can adaptively compress the angular space. It does so by selecting reduced TFPS basis functions based on the local optical properties of the background media. These reduced basis functions capture the important local modes in the velocity domain. A detailed a posteriori error analysis is performed to quantify the discrepancy between the reduced and full TFPS solutions. Additionally, numerical experiments demonstrate the efficiency and accuracy of the adaptive TFPS in solving multiscale RTEs, especially in scenarios involving boundary and interface layers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_08783 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | An Adaptive Angular Domain Compression Scheme For Solving Multiscale Radiative Transfer Equation Song, Qinchen Fu, Jingyi Tang, Min Zhang, Lei Numerical Analysis 35Q70, 65N22, 65N50, 65N06, 65G99 When dealing with the steady-state multiscale radiative transfer equation (RTE) with heterogeneous coefficients, spatially localized low-rank structures are present in the angular space. This paper introduces an adaptive tailored finite point scheme (TFPS) for RTEs in heterogeneous media, which can adaptively compress the angular space. It does so by selecting reduced TFPS basis functions based on the local optical properties of the background media. These reduced basis functions capture the important local modes in the velocity domain. A detailed a posteriori error analysis is performed to quantify the discrepancy between the reduced and full TFPS solutions. Additionally, numerical experiments demonstrate the efficiency and accuracy of the adaptive TFPS in solving multiscale RTEs, especially in scenarios involving boundary and interface layers. |
| title | An Adaptive Angular Domain Compression Scheme For Solving Multiscale Radiative Transfer Equation |
| topic | Numerical Analysis 35Q70, 65N22, 65N50, 65N06, 65G99 |
| url | https://arxiv.org/abs/2408.08783 |