Effect of inertia on model flocks in a turbulent environment
International Centre for Theoretical Sciences, Tata Institute of Fundamental Research - Bangalore 560012, India
Received: 1 June 2015
Accepted: 20 October 2015
We study flocking of self-propelled, interacting microorganisms with finite sizes and mass immersed in a turbulent flow. In the presence of the competing interactions of self-propulsion and the carrier turbulent flow, as is typical in nature, we show that including the effect of inertia is essential for the stability of flocks. We examine the problem from the point of view of global as well as local order and the statistics of the velocity of the microorganisms as a function of the inertia, the interaction radius, the level of self-propulsion as well as noise.
PACS: 47.27.-i – Turbulent flows / 47.54.-r – Pattern selection; pattern formation / 87.23.Cc – Population dynamics and ecological pattern formation
© EPLA, 2015