Highly elastic fibers in a shear flow can form double helices

Autor: Agnieszka M Słowicka, Nan Xue, Lujia Liu, Janine K Nunes, Paweł Sznajder, Howard A Stone, Maria L Ekiel-Jeżewska
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: New Journal of Physics, Vol 26, Iss 7, p 073011 (2024)
Druh dokumentu: article
ISSN: 1367-2630
DOI: 10.1088/1367-2630/ad56c0
Popis: The long-time behavior of highly elastic fibers in a shear flow is investigated experimentally and numerically. Characteristic attractors of the dynamics are found. It is shown that for a small ratio of bending to hydrodynamic forces, most fibers form a spinning elongated double helix, performing an effective Jeffery orbit very close to the vorticity direction. Recognition of these oriented shapes, and how they form in time, may prove useful in the future for understanding the time history of complex microstructures in fluid flows and considering processing steps for their synthesis.
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