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

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108155

Title:	Suppressing turbulence of self-propelling rods by strongly coupled passive particles
Authors:	伊林;Su, Yen-Shuo;Wang, Hao-Chen;I, Lin
Contributors:	理學院物理學系
Keywords:	Models, Theoretical;Motion
Date:	2015-03-30
Issue Date:	2026-04-23 14:37:23 (UTC+8)
Publisher:	American Physical Society;United States
Abstract:	摘要： 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. 其他題名： Phys Rev E Stat Nonlin Soft Matter Phys 出版者： United States 出版日期： 2015-03 出處： Physical review. E, Statistical, nonlinear, and soft matter physics, 2015-03, Vol.91 (3), p.030302, Article 030302 識別號： ISSN: 1539-3755 識別號： ISSN: 1550-2376 識別號： EISSN: 1550-2376 識別號： DOI: 10.1103/PhysRevE.91.030302 識別號： PMID: 25871033
Appears in Collections:	[Department of Physics] journal & Dissertation

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