Optical depth in particle-laden turbulent flows

被引：16

作者：

Frankel, A. ^{[1
]}

Iaccarino, G. ^{[1
]}

Mani, A. ^{[1
]}

机构：

[1] Stanford Univ, 488 Escondido Mall,Bldg 500, Stanford, CA 94305 USA

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2017年 / 201卷

关键词：

Turbulence; Beer's law; Particles; Closure; PREFERENTIAL CONCENTRATION; RADIATION; EXTINCTION; PROPAGATION; MEDIA;

D O I：

10.1016/j.jqsrt.2017.06.029

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Turbulent clustering of particles causes an increase in the radiation transmission through gas-particle mixtures. Attempts to capture the ensemble-averaged transmission lead to a closure problem called the turbulence-radiation interaction. A simple closure model based on the particle radial distribution function is proposed to capture the effect of turbulent fluctuations in the concentration on radiation intensity. The model is validated against a set of particle-resolved ray tracing experiments through particle fields from direct numerical simulations of particle-laden turbulence. The form of the closure model is generalizable to arbitrary stochastic media with known two-point correlation functions. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：10 / 16

页数：7

共 50 条

[1] Experiments on turbulent particle-laden flows
Longmire, EK
Khalitov, DA
Pothos, S
[J]. ENERGY AND ENVIRONMENT: TECHNOLOGICAL CHALLENGES FOR THE FUTURE, 2001, : 221 - 238
[2] ON PREDICTING PARTICLE-LADEN TURBULENT FLOWS
ELGHOBASHI, S
[J]. APPLIED SCIENTIFIC RESEARCH, 1994, 52 (04): : 309 - 329
[3] Bubbly and Buoyant Particle-Laden Turbulent Flows
Mathai, Varghese
Lohse, Detlef
Sun, Chao
[J]. ANNUAL REVIEW OF CONDENSED MATTER PHYSICS, VOL 11, 2020, 2020, 11 : 529 - 559
[4] Solid particle distribution in particle-laden turbulent channel flows
Lei, Kang-Bin
Kase, Kiwamu
Oshima, Nobuyuki
Kobayashi, Toshio
[J]. PROGRESS IN COMPUTATIONAL FLUID DYNAMICS, 2008, 8 (7-8): : 413 - 423
[5] Numerical simulations of particle-laden axisymmetric turbulent flows
Liao, S
Mashayek, F
Guo, D
[J]. NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2001, 39 (08) : 847 - 855
[6] Multigrid acceleration of computations of turbulent particle-laden flows
Chen, XQ
[J]. NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS, 2001, 40 (02) : 139 - 162
[7] Temperature fluctuations in particle-laden homogeneous turbulent flows
Jaberi, FA
[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1998, 41 (24) : 4081 - 4093
[8] An updated classification map of particle-laden turbulent flows
Elghobashi, Said
[J]. IUTAM SYMPOSIUM ON COMPUTATIONAL APPROACHES TO MULTIPHASE FLOW, 2006, 81 : 3 - 10
[9] On the formation of thermal caustics in turbulent particle-laden flows
Zandi Pour, Hamid Reza
Iovieno, Michele
[J]. Physics of Fluids, 2024, 36 (12)
[10] Turbulent scales of dilute particle-laden flows in microgravity
Groszmann, DE
Rogers, CB
[J]. PHYSICS OF FLUIDS, 2004, 16 (12) : 4671 - 4684

← 1 2 3 4 5 →