Acceleration statistics of inertial particles from high resolution DNS turbulence

被引：3

作者：

Toschi, Federico ^{[1
]}

Bec, Jeremie ^{[2
]}

Biferale, Luca ^{[3
]}

Boffetta, Guido ^{[4
]}

Celani, Antonio ^{[5
]}

Cencini, Massimo ^{[6
]}

Lanotte, Alessandra S. ^{[7
]}

Musacchio, Stefano ^{[8
]}

机构：

[1] CNR, IAC, Viale Policlin 137, I-00161 Rome, Italy

[2] CNRS, Paris, France

[3] Univ Rome, Dept Phys, INFN, Rome, Italy

[4] Univ Turin, Dept Phys, Turin, Italy

[5] CNRS, Valbonne, France

[6] Univ Rome, Dept Phys, Rome, Italy

[7] CNR, Lecce, Italy

[8] Univ Turin, Ist Nazl Fis Nucl, Dept Phys, Turin, Italy

来源：

IUTAM SYMPOSIUM ON COMPUTATIONAL PHYSICS AND NEW PERSPECTIVES IN TURBULENCE | 2008年 / 4卷

关键词：

Lagrangian turbulence; heavy particles; Stokes particles; acceleration statistics;

D O I：

10.1007/978-1-4020-6472-2_11

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results from recent direct numerical simulations of heavy particle transport in homogeneous, isotropic, fully developed turbulence, with grid resolution up to 512(3) and R-lambda approximate to 185. By following the trajectories of millions of particles with different Stokes numbers, St is an element of [0.16 : 3.5], we are able to characterize in full detail the statistics of particle acceleration. We focus on the probability density function of the normalised acceleration a/a(rms) and on the behaviour of their root-mean-squared acceleration a(rms) as a function of both St and R-lambda. We explain our findings in terms of two concurrent mechanisms: particle clustering, very effective for small St, and filtering induced by finite particle response time, taking over at larger St.

引用

页码：73 / +

页数：2

共 50 条

[1] Settling velocity of small inertial particles in homogeneous isotropic turbulence from high-resolution DNS
Rosa, Bogdan
Parishani, Hossein
Ayala, Orlando
Wang, Lian-Ping
[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2016, 83 : 217 - 231
[2] Collision statistics and settling velocity of inertial particles in homogeneous turbulence from high-resolution DNS under two-way momentum coupling
Rosa, Bogdan
Kopec, Szymon
Ababaei, Ahmad
Pozorski, Jacek
[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2022, 148
[3] Effects of gravity on the acceleration and pair statistics of inertial particles in homogeneous isotropic turbulence
Parishani, H.
Ayala, O.
Rosa, B.
Wang, L. -P.
Grabowski, W. W.
[J]. PHYSICS OF FLUIDS, 2015, 27 (03)
[4] Universality in Statistics at Small Scales of Turbulence: A Study by High Resolution DNS
Kaneda, Yukio
Ishihara, Takashi
[J]. TURBULENCE AND INTERACTIONS, 2009, 105 : 55 - 76
[5] Acceleration statistics of heavy particles in turbulence
Bec, J
Biferale, L
Boffetta, G
Celani, A
Cencini, M
Lanotte, A
Musacchio, S
Toschi, F
[J]. JOURNAL OF FLUID MECHANICS, 2006, 550 : 349 - 358
[6] High resolution DNS of incompressible homogeneous forced turbulence - Time dependence of the statistics
Ishihara, T
Kaneda, Y
[J]. STATISTICAL THEORIES AND COMPUTATIONAL APPROACHES TO TURBULENCE: MODERN PERSPECTIVES AND APPLICATIONS TO GLOBAL-SCALE FLOWS, 2003, : 177 - 188
[7] Acceleration statistics of inertial particles in turbulent flow
N. M. Qureshi
U. Arrieta
C. Baudet
A. Cartellier
Y. Gagne
M. Bourgoin
[J]. The European Physical Journal B, 2008, 66 : 531 - 536
[8] Acceleration statistics of inertial particles in turbulent flow
Qureshi, N. M.
Arrieta, U.
Baudet, C.
Cartellier, A.
Gagne, Y.
Bourgoin, M.
[J]. EUROPEAN PHYSICAL JOURNAL B, 2008, 66 (04): : 531 - 536
[9] Modeling inertial particle acceleration statistics in isotropic turbulence
Ayyalasomayajula, S.
Warhaft, Z.
Collins, L. R.
[J]. PHYSICS OF FLUIDS, 2008, 20 (09)
[10] Acceleration and velocity statistics of Lagrangian particles in turbulence
Boffetta, Guido
[J]. Particle-Laden Flow: From Geophysical to Kolmogorov Scales, 2007, 11 : 221 - 228

← 1 2 3 4 5 →