Hydrodynamic limit of multiscale viscoelastic models for rigid particle suspensions
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866910815549915136 |
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| author | Duerinckx, Mitia Ertzbischoff, Lucas Girodroux-Lavigne, Alexandre Höfer, Richard M. |
| author_facet | Duerinckx, Mitia Ertzbischoff, Lucas Girodroux-Lavigne, Alexandre Höfer, Richard M. |
| contents | We study the multiscale viscoelastic Doi model for suspensions of Brownian rigid rod-like particles, as well as its generalization by Saintillan and Shelley for self-propelled particles. We consider the regime of a small Weissenberg number, which corresponds to a fast rotational diffusion compared to the fluid velocity gradient, and we analyze the resulting hydrodynamic approximation. More precisely, we show the asymptotic validity of macroscopic nonlinear viscoelastic models, in form of so-called ordered fluid models, as an expansion in the Weissenberg number. The result holds for zero Reynolds number in 3D and for arbitrary Reynolds number in 2D. Along the way, we establish several new well-posedness and regularity results for nonlinear fluid models, which may be of independent interest. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_17008 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Hydrodynamic limit of multiscale viscoelastic models for rigid particle suspensions Duerinckx, Mitia Ertzbischoff, Lucas Girodroux-Lavigne, Alexandre Höfer, Richard M. Analysis of PDEs We study the multiscale viscoelastic Doi model for suspensions of Brownian rigid rod-like particles, as well as its generalization by Saintillan and Shelley for self-propelled particles. We consider the regime of a small Weissenberg number, which corresponds to a fast rotational diffusion compared to the fluid velocity gradient, and we analyze the resulting hydrodynamic approximation. More precisely, we show the asymptotic validity of macroscopic nonlinear viscoelastic models, in form of so-called ordered fluid models, as an expansion in the Weissenberg number. The result holds for zero Reynolds number in 3D and for arbitrary Reynolds number in 2D. Along the way, we establish several new well-posedness and regularity results for nonlinear fluid models, which may be of independent interest. |
| title | Hydrodynamic limit of multiscale viscoelastic models for rigid particle suspensions |
| topic | Analysis of PDEs |
| url | https://arxiv.org/abs/2310.17008 |