From particle to kinetic and hydrodynamic descriptions of flocking

Seung-Yeal Ha; Eitan Tadmor

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arXiv · 0806.2182

From particle to kinetic and hydrodynamic descriptions of flocking

Seung-Yeal Ha·Eitan Tadmor

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Abstract

We discuss the Cucker-Smale's (C-S) particle model for flocking, deriving precise conditions for flocking to occur when pairwise interactions are sufficiently strong long range. We then derive a Vlasov-type kinetic model for the C-S particle model and prove it exhibits time-asymptotic flocking behavior for arbitrary compactly supported initial data. Finally, we introduce a hydrodynamic description of flocking based on the C-S Vlasov-type kinetic model and prove flocking behavior \emph{without} closure of higher moments.

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Seung-Yeal Ha, Eitan Tadmor. 2008-06-13. From particle to kinetic and hydrodynamic descriptions of flocking. https://arxiv.org/abs/0806.2182

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