We report an elastic-light-scattering experiment for a semidilute polymer solution under a uniform laminar shear flow. The concentration fluctuations are greatly enhanced by shear flow and their structure is highly anisotropic in both the weak ({γ} ̇ \.{}{}τd{}1) and strong ({γ} ̇ \.{}{}τd{}1) shear regimes, where {γ} ̇ \.{}{} is the shear rate and τd is the longest relaxation time of the system. The anisotropy is qualitatively different from binary liquid mixtures under a shear flow as a result of the strong coupling between the concentration fluctuations and the hydrodynamic flow.
No takes yet. Share an insight, caveat, or question.
Wu et al. (1991) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: