Global weak solutions of the Navier-Stokes-Korteweg Equations in one dimension
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866909508253515776 |
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| author | Antonelli, Paolo Bresch, Didier Spirito, Stefano |
| author_facet | Antonelli, Paolo Bresch, Didier Spirito, Stefano |
| contents | We prove the global existence of weak solutions of the one-dimensional Navier-Stokes-Korteweg (NSK) equations when the viscosity and the capillarity coefficients are power functions of the density, which may be zero on a set with positive measure. The proofs are based on a truncation argument combined with the Energy estimate and BD Entropy. Notably, we do not require any upper bound on the exponent of the power of the viscosity coefficient. In particular, we are able to consider very degenerate viscosity coefficient and to substantially improve previous results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_17147 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Global weak solutions of the Navier-Stokes-Korteweg Equations in one dimension Antonelli, Paolo Bresch, Didier Spirito, Stefano Analysis of PDEs Primary: 35Q35, Secondary: 76N10, 35D30 We prove the global existence of weak solutions of the one-dimensional Navier-Stokes-Korteweg (NSK) equations when the viscosity and the capillarity coefficients are power functions of the density, which may be zero on a set with positive measure. The proofs are based on a truncation argument combined with the Energy estimate and BD Entropy. Notably, we do not require any upper bound on the exponent of the power of the viscosity coefficient. In particular, we are able to consider very degenerate viscosity coefficient and to substantially improve previous results. |
| title | Global weak solutions of the Navier-Stokes-Korteweg Equations in one dimension |
| topic | Analysis of PDEs Primary: 35Q35, Secondary: 76N10, 35D30 |
| url | https://arxiv.org/abs/2502.17147 |