Existence of Weak Solutions Up to Collision for Viscous Fluid‐Solid Systems with Slip
Identifieur interne : 000009 ( Main/Exploration ); précédent : 000008; suivant : 000010Existence of Weak Solutions Up to Collision for Viscous Fluid‐Solid Systems with Slip
Auteurs : David Gérard-Varet [France] ; Matthieu Hillairet [France]Source :
- Communications on Pure and Applied Mathematics [ 0010-3640 ] ; 2014-12.
Abstract
We study in this paper the movement of a rigid solid inside an incompressible Navier‐Stokes flow within a bounded domain. We consider the case where slip is allowed at the fluid/solid interface through a Navier condition. Taking into account slip at the interface is very natural within this model, as classical no‐slip conditions lead to unrealistic collisional behavior between the solid and the domain boundary. We prove for this model existence of weak solutions of Leray type, up to collision, in three dimensions. The key point is that, due to the slip condition, the velocity field is discontinuous across the fluid/solid interface. This prevents obtaining global H1 bounds on the velocity, which makes many aspects of the theory of weak solutions for Dirichlet conditions inappropriate. © 2014 Wiley Periodicals, Inc.
Url:
DOI: 10.1002/cpa.21523
Affiliations:
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We consider the case where slip is allowed at the fluid/solid interface through a Navier condition. Taking into account slip at the interface is very natural within this model, as classical no‐slip conditions lead to unrealistic collisional behavior between the solid and the domain boundary. We prove for this model existence of weak solutions of Leray type, up to collision, in three dimensions. The key point is that, due to the slip condition, the velocity field is discontinuous across the fluid/solid interface. This prevents obtaining global H1 bounds on the velocity, which makes many aspects of the theory of weak solutions for Dirichlet conditions inappropriate. © 2014 Wiley Periodicals, Inc.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Île-de-France</li></region></list><tree><country name="France"><noRegion><name sortKey="Gerard Aret, David" sort="Gerard Aret, David" uniqKey="Gerard Aret D" first="David" last="Gérard-Varet">David Gérard-Varet</name></noRegion><name sortKey="Gerard Aret, David" sort="Gerard Aret, David" uniqKey="Gerard Aret D" first="David" last="Gérard-Varet">David Gérard-Varet</name><name sortKey="Gerard Aret, David" sort="Gerard Aret, David" uniqKey="Gerard Aret D" first="David" last="Gérard-Varet">David Gérard-Varet</name><name sortKey="Hillairet, Matthieu" sort="Hillairet, Matthieu" uniqKey="Hillairet M" first="Matthieu" last="Hillairet">Matthieu Hillairet</name><name sortKey="Hillairet, Matthieu" sort="Hillairet, Matthieu" uniqKey="Hillairet M" first="Matthieu" last="Hillairet">Matthieu Hillairet</name><name sortKey="Hillairet, Matthieu" sort="Hillairet, Matthieu" uniqKey="Hillairet M" first="Matthieu" last="Hillairet">Matthieu Hillairet</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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