Hydrodynamic Cucker-Smale Model with Normalized Communication Weights and Time Delay

Young-Pil Choi, Jan Haskovec

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We study a hydrodynamic Cucker-Smale-type model with time delay in communication and information processing, in which agents interact with each other through normalized communication weights. The model consists of a pressureless Euler system with time-delayed nonlocal alignment forces. We resort to its Lagrangian formulation and prove the existence of its global-in-time classical solutions. Moreover, we derive a sufficient condition for the asymptotic flocking behavior of the solutions. Finally, we show the presence of a critical phenomenon for the Eulerian system posed in the spatially one-/two-dimensional setting.
Original languageEnglish (US)
Pages (from-to)2660-2685
Number of pages26
JournalSIAM Journal on Mathematical Analysis
Issue number3
StatePublished - Jun 25 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): 1000000193
Acknowledgements: The first author's research was supported by National Research Foundation of Korea (NRF) grants 2017R1C1B2012918 and 2017R1A4A1014735 funded by the Korean government (MSIP), by a POSCO Science Fellowship of the POSCO TJ Park Foundation, and by the Alexander Humboldt Foundation through the Humboldt Research Fellowship for Postdoctoral Researchers. The second author's research was supported by KAUST baseline funds and KAUST grant 1000000193.


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