AI Article Synopsis
- The study numerically investigates topological defects in the shear flow of active nematic fluids, revealing that medium activity leads to an ordered vortex lattice, while high activity results in turbulent flow with defects.
- The research finds that the number of topological defects (N) increases with the shear Reynolds number (Re) and is significantly affected by fluid viscosity, although fluid density has a weaker impact.
- Additionally, it notes that N decreases as the activity length scale (l) increases, with contractile active nematic fluids showing more defects than extensile ones as activity rises.
Article Abstract
The number of topological defects in the shear flow of active nematic fluids is numerically investigated in this study. The evolution of the flow state of extensile active nematic fluids is explored by increasing the activity of active nematic fluids. Evidently, medium-activity active nematic fluids exhibit a highly ordered vortex lattice fluid state. However, high-activity active nematic fluids exhibit a meso-scale turbulent flow accompanied by topological defects. The number of topological defects (N) increases with increasing shear Reynolds number (Re). Fluid viscosity strongly influences N, while the influence of fluid density is relatively weak. N decreases with increasing activity length scale (l) value. A small Re value strongly influences N, whereas a large l value only weakly influences N. As the activity increases, N in contractile active nematic fluids becomes larger than that of extensile active nematic fluids.
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| http://dx.doi.org/10.1140/epje/s10189-024-00437-4 | DOI Listing |
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