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arXiv · 1910.05229

Self-propelled motion of a rigid body inside a density dependent incompressible fluid

Sarka Necasova·Mythily Ramaswamy·Arnab Roy·Anja Schlomerkemper
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Abstract

This paper is devoted to the existence of a weak solution to a system describing a self-propelled motion of a rigid body in a viscous fluid in the whole $\mathbb{R}^3$. The fluid is modelled by the incompressible nonhomogeneous Navier-Stokes system with a nonnegative density. The motion of the rigid body is described by the balance of linear and angular momentum. We consider the case where slip is allowed at the fluid-solid interface through Navier condition and prove the global existence of a weak solution.

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Sarka Necasova, Mythily Ramaswamy, Arnab Roy, Anja Schlomerkemper. 2019-10-11. Self-propelled motion of a rigid body inside a density dependent incompressible fluid. https://arxiv.org/abs/1910.05229

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