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Changhui Tan, NC State, Self-organized dynamics: aggregation and flocking

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October 26, 2017 | 3:00 pm - 4:00 pm EDT

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Self-organized behaviors are commonly observed in nature and human societies, such as bird flocks, fish swarms and human crowds. In this talk, I will present some celebrated mathematical models, with simple small-scale interactions which lead to the emergence of global behaviors: aggregation and flocking.
I will discuss the models in different scales: from microscopic agent-based dynamics, through kinetic mean-field descriptions, to macroscopic fluid systems. In particular, the macroscopic models can be viewed as compressible Euler equations with nonlocal interactions. I will show some recent results on the global wellposedness theory of the systems, large time behaviors, and interesting connections to some classical equations in fluid mechanics.


October 26, 2017
3:00 pm - 4:00 pm
Event Category:
SAS 4201