Duerinckx, Mitia and Ertzbischoff, Lucas and Girodroux-Lavigne, Alexandre and Hoefer, Richard M. (2025) Hydrodynamic Limit of Multiscale Viscoelastic Models for Rigid Particle Suspensions. ARCHIVE FOR RATIONAL MECHANICS AND ANALYSIS, 249 (2): 23. ISSN 0003-9527, 1432-0673
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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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NAVIER-STOKES EQUATIONS; EINSTEINS EFFECTIVE VISCOSITY; GLOBAL WELL-POSEDNESS; ROD-LIKE; RHEOLOGICAL PROPERTIES; SEDIMENTATION; DERIVATION; EXISTENCE; FORMULA; SYSTEM |
| Subjects: | 500 Science > 510 Mathematics |
| Divisions: | Mathematics > Prof. Dr. Richard Höfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Apr 2026 05:07 |
| Last Modified: | 21 Apr 2026 05:07 |
| URI: | https://pred.uni-regensburg.de/id/eprint/66921 |
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