Heavy particle clustering in turbulent flows

J. Bec; L. Biferale; M. Cencini; A. Lanotte; S. Musacchio; F. Toschi

doi:10.1007/978-1-4020-6472-2_12

Heavy particle clustering in turbulent flows

J. Bec, L. Biferale, M. Cencini, A. Lanotte, S. Musacchio, F. Toschi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Distributions of heavy particles suspended in incompressible turbulent flows are investigated by means of high-resolution direct numerical simulations. It is shown that particles form fractal clusters in the dissipative range, with properties independent of the Reynolds number. Conversely, in the inertial range, the particle distribution is not scale-invariant. It is however shown that deviations from uniformity depends only on a rescaled contraction rate, and not on the local Stokes number given by dimensional analysis. Particle distribution is characterized by voids spanning all scales of the turbulent flow; their signature on the coarse-grained mass probability distribution is an algebraic behavior at small densities.

Original language	English
Title of host publication	Proceedings of the IUTAM Symposium on Computational Physics and New Perspectives in Turbulence (Nagoya, Japan, September, 11-14, 2006)
Editors	Y. Kaneda
Publisher	Springer
Pages	79-84
ISBN (Print)	978-1-4020-6471-5
DOIs	https://doi.org/10.1007/978-1-4020-6472-2_12
Publication status	Published - 2008

Publication series

Name	IUTAM Bookseries
Volume	4
ISSN (Print)	1875-3507

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10.1007/978-1-4020-6472-2_12

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Bec, J., Biferale, L., Cencini, M., Lanotte, A., Musacchio, S., & Toschi, F. (2008). Heavy particle clustering in turbulent flows. In Y. Kaneda (Ed.), Proceedings of the IUTAM Symposium on Computational Physics and New Perspectives in Turbulence (Nagoya, Japan, September, 11-14, 2006) (pp. 79-84). (IUTAM Bookseries; Vol. 4). Springer. https://doi.org/10.1007/978-1-4020-6472-2_12

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abstract = "Distributions of heavy particles suspended in incompressible turbulent flows are investigated by means of high-resolution direct numerical simulations. It is shown that particles form fractal clusters in the dissipative range, with properties independent of the Reynolds number. Conversely, in the inertial range, the particle distribution is not scale-invariant. It is however shown that deviations from uniformity depends only on a rescaled contraction rate, and not on the local Stokes number given by dimensional analysis. Particle distribution is characterized by voids spanning all scales of the turbulent flow; their signature on the coarse-grained mass probability distribution is an algebraic behavior at small densities.",

author = "J. Bec and L. Biferale and M. Cencini and A. Lanotte and S. Musacchio and F. Toschi",

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Heavy particle clustering in turbulent flows. / Bec, J.; Biferale, L.; Cencini, M.; Lanotte, A.; Musacchio, S.; Toschi, F.

Proceedings of the IUTAM Symposium on Computational Physics and New Perspectives in Turbulence (Nagoya, Japan, September, 11-14, 2006). ed. / Y. Kaneda. Springer, 2008. p. 79-84 (IUTAM Bookseries; Vol. 4).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Heavy particle clustering in turbulent flows

AU - Bec, J.

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AU - Cencini, M.

AU - Lanotte, A.

AU - Musacchio, S.

AU - Toschi, F.

PY - 2008

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AB - Distributions of heavy particles suspended in incompressible turbulent flows are investigated by means of high-resolution direct numerical simulations. It is shown that particles form fractal clusters in the dissipative range, with properties independent of the Reynolds number. Conversely, in the inertial range, the particle distribution is not scale-invariant. It is however shown that deviations from uniformity depends only on a rescaled contraction rate, and not on the local Stokes number given by dimensional analysis. Particle distribution is characterized by voids spanning all scales of the turbulent flow; their signature on the coarse-grained mass probability distribution is an algebraic behavior at small densities.

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DO - 10.1007/978-1-4020-6472-2_12

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BT - Proceedings of the IUTAM Symposium on Computational Physics and New Perspectives in Turbulence (Nagoya, Japan, September, 11-14, 2006)

A2 - Kaneda, Y.

PB - Springer

ER -

Heavy particle clustering in turbulent flows

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