Suppressing turbulence of self-propelling rods by strongly coupled passive particles

Yen Shuo Su, Hao Chen Wang, I. Lin

研究成果: 雜誌貢獻期刊論文同行評審

5 引文 斯高帕斯(Scopus)


The strong turbulence suppression, mainly for large-scale modes, of two-dimensional self-propelling rods, by increasing the long-range coupling strength Γ of low-concentration passive particles, is numerically demonstrated. It is found that large-scale collective rod motion in forms of swirls or jets is mainly contributed from well-aligned dense patches, which can push small poorly aligned rod patches and uncoupled passive particles. The more efficient momentum transfer and dissipation through increasing passive particle coupling leads to the formation of a more ordered and slowed down network of passive particles, which competes with coherent dense active rod clusters. The frustration of active rod alignment ordering and coherent motion by the passive particle network, which interrupt the inverse cascading of forming large-scale swirls, is the key for suppressing collective rod motion with scales beyond the interpassive distance, even in the liquid phase of passive particles. The loosely packed active rods are weakly affected by increasing passive particle coupling due to the weak rod-particle interaction. They mainly contribute to the small-scale modes and high-speed motion.

期刊Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
出版狀態已出版 - 30 3月 2015


深入研究「Suppressing turbulence of self-propelling rods by strongly coupled passive particles」主題。共同形成了獨特的指紋。