Sharp Material Interface Limit of the Darcy-Boussinesq System
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916706303082496 |
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| author | Dong, Hongjie Wang, Xiaoming |
| author_facet | Dong, Hongjie Wang, Xiaoming |
| contents | We investigate the sharp material interface limit of the Darcy-Boussinesq model for convection in layered porous media with diffused material interfaces, which allow a gradual transition of material parameters between different layers. We demonstrate that as the thickness of these transition layers approaches zero, the conventional sharp interface model with interfacial boundary conditions, commonly adopted by the fluids community, is recovered under the assumption of constant porosity. Our results validate the widely used sharp interface model by bridging it with the more physically realistic case of diffused material interfaces. This limiting process is singular and involves a boundary layer in the velocity field. Our analysis requires del |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17661 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Sharp Material Interface Limit of the Darcy-Boussinesq System Dong, Hongjie Wang, Xiaoming Analysis of PDEs 35Q35, 35Q86, 76D03, 76S99, 76R99 We investigate the sharp material interface limit of the Darcy-Boussinesq model for convection in layered porous media with diffused material interfaces, which allow a gradual transition of material parameters between different layers. We demonstrate that as the thickness of these transition layers approaches zero, the conventional sharp interface model with interfacial boundary conditions, commonly adopted by the fluids community, is recovered under the assumption of constant porosity. Our results validate the widely used sharp interface model by bridging it with the more physically realistic case of diffused material interfaces. This limiting process is singular and involves a boundary layer in the velocity field. Our analysis requires del |
| title | Sharp Material Interface Limit of the Darcy-Boussinesq System |
| topic | Analysis of PDEs 35Q35, 35Q86, 76D03, 76S99, 76R99 |
| url | https://arxiv.org/abs/2504.17661 |