Weak solutions and weak-strong uniqueness for a compressible power-law-Oldroyd--B fluid model
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866915546493091840 |
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| author | Lu, Yong Pokorny, Milan |
| author_facet | Lu, Yong Pokorny, Milan |
| contents | We consider a model of a viscoelastic compressible flow in $R^{3}$ which is additionally shear thickening (the stress tensor corresponds to the power law model, however, the divergence of the velocity is due to the model bounded). We prove existence of a weak solution to this model provided the growth in the power law model is larger or equal than $\frac 52$. We also prove that any sufficiently smooth solution of this model is unique in the class of weak solution, provided extra integrability of the initial value for the extra stress tensor is assumed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_10096 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Weak solutions and weak-strong uniqueness for a compressible power-law-Oldroyd--B fluid model Lu, Yong Pokorny, Milan Analysis of PDEs 35Q35, 76N10 We consider a model of a viscoelastic compressible flow in $R^{3}$ which is additionally shear thickening (the stress tensor corresponds to the power law model, however, the divergence of the velocity is due to the model bounded). We prove existence of a weak solution to this model provided the growth in the power law model is larger or equal than $\frac 52$. We also prove that any sufficiently smooth solution of this model is unique in the class of weak solution, provided extra integrability of the initial value for the extra stress tensor is assumed. |
| title | Weak solutions and weak-strong uniqueness for a compressible power-law-Oldroyd--B fluid model |
| topic | Analysis of PDEs 35Q35, 76N10 |
| url | https://arxiv.org/abs/2510.10096 |