scholarly journals Self-organization in suspensions of end-functionalized semiflexible polymers under shear flow

2015 ◽  
Vol 143 (24) ◽  
pp. 243117 ◽  
Author(s):  
Jin Suk Myung ◽  
Roland G. Winkler ◽  
Gerhard Gompper
Keyword(s):  
Shear Flow ◽  
Self Organization ◽  
Semiflexible Polymers

The large scale stability and self-organization in homogeneous turbulent shear flow

1994 ◽  
Vol 49 (2) ◽  
pp. 214-220 ◽  
Author(s):  
Otto G Chkhetiany ◽  
Semion S Moiseev ◽  
Arakel S Petrosyan ◽  
Roald Z Sagdeev
Keyword(s):  
Shear Flow ◽  
Large Scale ◽  
Self Organization ◽  
Turbulent Shear ◽  
Turbulent Shear Flow

scholarly journals Self-organization of ULF electromagnetic wave structures in the shear flow driven dissipative ionosphere

2014 ◽  
Vol 1 (2) ◽  
pp. 1431-1464
Author(s):  
G. Aburjania ◽  
K. Chargazia ◽  
O. Kharshiladze ◽  
G. Zimbardo
Keyword(s):  
Shear Flow ◽  
Analytical Calculation ◽  
Low Frequency ◽  
Threshold Value ◽  
Vortex Structures ◽  
Self Organization ◽  
Frequency Wave ◽  
Translation Velocity ◽  
Vortex Streets ◽  
Dipole Vortex

Abstract. This work is devoted to investigation of nonlinear dynamics of planetary electromagnetic (EM) ultra-low-frequency wave (ULFW) structures in the rotating dissipative ionosphere in the presence of inhomogeneous zonal wind (shear flow). Planetary EM ULFW appears as a result of interaction of the ionospheric medium with the spatially inhomogeneous geomagnetic field. The shear flow driven wave perturbations effectively extract energy of the shear flow increasing own amplitude and energy. These perturbations undergo self organization in the form of the nonlinear solitary vortex structures due to nonlinear twisting of the perturbation's front. Depending on the features of the velocity profiles of the shear flows the nonlinear vortex structures can be either monopole vortices, or dipole vortex, or vortex streets and vortex chains. From analytical calculation and plots we note that the formation of stationary nonlinear vortex structure requires some threshold value of translation velocity for both non-dissipation and dissipation complex ionospheric plasma. The space and time attenuation specification of the vortices is studied. The characteristic time of vortex longevity in dissipative ionosphere is estimated. The long-lived vortices transfer the trapped medium particles, energy and heat. Thus they represent structural elements of turbulence in the ionosphere.

Understanding conformational and dynamical evolution of semiflexible polymers in shear flow

Soft Matter ◽  
2019 ◽  
Vol 15 (31) ◽  
pp. 6353-6361 ◽  
Author(s):  
Xiangxin Kong ◽  
Yingchun Han ◽  
Wenduo Chen ◽  
Fengchao Cui ◽  
Yunqi Li
Keyword(s):  
Shear Strength ◽  
Shear Flow ◽  
Dynamical Evolution ◽  
Semiflexible Polymers ◽  
Flexible Polymers ◽  
Affine Deformation

At small and intermediate shear strength, flexible polymers show a quasi-affine deformation while semiflexible ones are initially unfolded from the center.

Direct Observation of the Dynamics of Semiflexible Polymers in Shear Flow

2013 ◽  
Vol 110 (10) ◽  
Author(s):  
Markus Harasim ◽  
Bernhard Wunderlich ◽  
Orit Peleg ◽  
Martin Kröger ◽  
Andreas R. Bausch
Keyword(s):  
Shear Flow ◽  
Direct Observation ◽  
Semiflexible Polymers

Nonlinear Response of Grafted Semiflexible Polymers in Shear Flow

2009 ◽  
Vol 42 (10) ◽  
pp. 3650-3655 ◽  
Author(s):  
Yong Woon Kim ◽  
V. Lobaskin ◽  
C. Gutsche ◽  
F. Kremer ◽  
Philip Pincus ◽  
...  
Keyword(s):  
Shear Flow ◽  
Nonlinear Response ◽  
Semiflexible Polymers
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