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Tee SY, Mucha PJ, Cipelletti L, et al. Nonuniversal velocity fluctuations of sedimenting particles. Phys Rev Lett. 2002;89(5):054501doi: 10.1103/PhysRevLett.89.054501.
Tee, S. Y., Mucha, P. J., Cipelletti, L., Manley, S., Brenner, M. P., Segre, P. N., & Weitz, D. A. (2002). Nonuniversal velocity fluctuations of sedimenting particles. Physical review letters, 89(5), 054501. https://doi.org/10.1103/PhysRevLett.89.054501
Tee, Shang-You, et al. "Nonuniversal velocity fluctuations of sedimenting particles." Physical review letters vol. 89,5 (2002): 054501. doi: https://doi.org/10.1103/PhysRevLett.89.054501
Tee SY, Mucha PJ, Cipelletti L, Manley S, Brenner MP, Segre PN, Weitz DA. Nonuniversal velocity fluctuations of sedimenting particles. Phys Rev Lett. 2002 Jul 29;89(5):054501. doi: 10.1103/PhysRevLett.89.054501. Epub 2002 Jul 15. PMID: 12144444.
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Phys Rev Lett. 2002 Jul 29;89(5):054501. doi: 10.1103/PhysRevLett.89.054501. Epub 2002 Jul 15.

Nonuniversal velocity fluctuations of sedimenting particles.

Physical review letters

Shang-You Tee, P J Mucha, Luca Cipelletti, S Manley, M P Brenner, P N Segre, D A Weitz

Affiliations

  1. Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.

PMID: 12144444 DOI: 10.1103/PhysRevLett.89.054501

Abstract

Velocity fluctuations in sedimentation are studied to investigate the origin of a hypothesized universal scale [P. N. Segre, E. Herbolzheimer, and P. M. Chaikin, Phys. Rev. Lett. 79, 2574 (1997)]. Our experiments show that fluctuations decay continuously in time for sufficiently thick cells, never reaching steady state. Simulations and scaling arguments suggest that the decay arises from increasing vertical stratification of particle concentration due to spreading of the sediment front. The results suggest that the velocity fluctuations in sedimentation depend sensitively on cell geometry.

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