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arXiv · 2006.06975

Measure-valued solutions and weak-strong uniqueness for the incompressible inviscid fluid-rigid body interaction

Matteo Caggio·Ondřej Kreml·Šárka Nečasová·Arnab Roy·Tong Tang
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Abstract

We consider a coupled system of partial and ordinary differential equations describing the interaction between an isentropic inviscid fluid and a rigid body moving freely inside the fluid. We prove the existence of measure-valued solutions which is generated by the vanishing viscosity limit of incompressible fluid-rigid body interaction system under some physically constitutive relations. Moreover, we show that the measure-value solution coincides with strong solution on the interval of its existence. This relies on the weak-strong uniqueness analysis.

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Matteo Caggio, Ondřej Kreml, Šárka Nečasová, Arnab Roy, Tong Tang. 2020-06-12. Measure-valued solutions and weak-strong uniqueness for the incompressible inviscid fluid-rigid body interaction. https://doi.org/10.1007/s00021-021-00581-3

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