Segregation-driven organization in chaotic granular flows

被引：137

作者：

Hill, KM ^{[1
]}

Khakhar, DV ^{[1
]}

Gilchrist, JF ^{[1
]}

McCarthy, JJ ^{[1
]}

Ottino, JM ^{[1
]}

机构：

[1] Northwestern Univ, RR McCormick Sch Engn & Appl Sci, Evanston, IL 60208 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1999年 / 96卷 / 21期

关键词：

D O I：

10.1073/pnas.96.21.11701

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

An important industrial problem that provides fascinating puzzles in pattern formation is the tendency for granular mixtures to de-mix or segregate. Small differences in either size or density lead to flow-induced segregation. Similar to fluids, noncohesive granular materials can display chaotic advection; when this happens chaos and segregation compete with each other, giving rise to a wealth of experimental outcomes. Segregated structures, obtained experimentally, display organization in the presence of disorder and are captured by a continuum flow model incorporating collisional diffusion and density-driven segregation. Under certain conditions, structures never settle into a steady shape. This may be the simplest experimental example of a system displaying competition between chaos and order.

引用

页码：11701 / 11706

页数：6

共 29 条

[1] Particle technology [J].

Bridgwater, J .

CHEMICAL ENGINEERING SCIENCE, 1995, 50 (24) :4081-4089

[2] RADIAL SEGREGATION IN A 2D DRUM - AN EXPERIMENTAL-ANALYSIS [J].

CANTELAUBE, F ;

BIDEAU, D .

EUROPHYSICS LETTERS, 1995, 30 (03) :133-138

[3] POWDER MIXING - LITERATURE SURVEY [J].

COOKE, MH ;

STEPHENS, DJ ;

BRIDGWATER, J .

POWDER TECHNOLOGY, 1976, 15 (01) :1-20

[4] THE DEFINITION AND MEASUREMENT OF SOME CHARACTERISTICS OF MIXTURES [J].

DANCKWERTS, PV .

APPLIED SCIENTIFIC RESEARCH SECTION A-MECHANICS HEAT CHEMICAL ENGINEERING MATHEMATICAL METHODS, 1952, 3 (04) :279-296

[5] AXIAL SEGREGATION OF PARTICLES IN A HORIZONTAL ROTATING CYLINDER [J].

DASGUPTA, S ;

KHAKHAR, DV ;

BHATIA, SK .

CHEMICAL ENGINEERING SCIENCE, 1991, 46 (5-6) :1513-1517

[6]

Donald M.B., 1962, BRIT CHEM ENG, V7, P749

[7]

Dury CM, 1997, J PHYS I, V7, P737, DOI 10.1051/jp1:1997188

[8] Granular flow in a rotating cylindrical drum [J].

Elperin, T ;

Vikhansky, A .

EUROPHYSICS LETTERS, 1998, 42 (06) :619-623

[9] RECENT DEVELOPMENTS IN SOLIDS MIXING [J].

FAN, LT ;

CHEN, YM ;

LAI, FS .

POWDER TECHNOLOGY, 1990, 61 (03) :255-287

[10] SYMMETRY CONCEPTS FOR THE GEOMETRIC ANALYSIS OF MIXING FLOWS [J].

FRANJIONE, JG ;

OTTINO, JM .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1992, 338 (1650) :301-323

← 1 2 3 →