Observation of Temperature Peaks due to Strong Viscous Heating in a Dusty Plasma Flow

被引：82

作者：

Feng, Yan ^{[1
]}

Goree, J. ^{[1
]}

Liu, Bin ^{[1
]}

机构：

[1] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 18期

基金：

美国国家科学基金会;

关键词：

CRYSTALS; NUMBER;

D O I：

10.1103/PhysRevLett.109.185002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Profound temperature peaks are observed in regions of high velocity shear in a 2D dusty plasma experiment with laser-driven flow. These are attributed to viscous heating, which occurs due to collisional scattering in a shear flow. Using measurements of viscosity, thermal conductivity, and spatial profiles of flow velocity and temperature, we determine three dimensionless numbers: Brinkman, Br = 0.5; Prandtl, Pr = 0.09; and Eckert, Ec = 5.7. The large value of Br indicates significant viscous heating that is consistent with the observed temperature peaks.

引用

页数：5

共 42 条

[11] PK-4 Science Activities in Micro-gravity [J].

Fink, Martin A. ;

Thoma, Markus H. ;

Morfill, Gregor E. .

MICROGRAVITY SCIENCE AND TECHNOLOGY, 2011, 23 (02) :169-171

[12]

Gschwendtner MA, 2004, HEAT MASS TRANSFER, V40, P551, DOI 10.1007/S00231-003-0437-9

[13] Crystallization Dynamics of a Single Layer Complex Plasma [J].

Hartmann, Peter ;

Douglass, Angela ;

Reyes, Jorge C. ;

Matthews, Lorin S. ;

Hyde, Truell W. ;

Kovacs, Aniko ;

Donko, Zoltan .

PHYSICAL REVIEW LETTERS, 2010, 105 (11)

[14] Laser-excited dust lattice waves in plasma crystals [J].

Homann, A ;

Melzer, A ;

Peters, S ;

Madani, R ;

Piel, A .

PHYSICS LETTERS A, 1998, 242 (03) :173-180

[15] THE MELTING PERFORMANCE OF SINGLE SCREW EXTRUDERS .2. [J].

HOUSZ, JFI ;

MEIJER, HEH .

POLYMER ENGINEERING AND SCIENCE, 1981, 21 (17) :1156-1161

[16]

Huba J.D., 1994, NRL Plasma Formulary

[17] Nonlinear transports and microvortex excitations in sheared quasi-two-dimensional dust Coulomb liquids [J].

Juan, WT ;

Chen, MH ;

I, L .

PHYSICAL REVIEW E, 2001, 64 (01) :5

[18] Two-dimensional Yukawa liquids:: Correlation and dynamics -: art. no. 065001 [J].

Kalman, GJ ;

Hartmann, P ;

Donkó, Z ;

Rosenberg, M .

PHYSICAL REVIEW LETTERS, 2004, 92 (06)

[19]

Landau L. D., 1986, THEORETICAL PHYS, V6

[20]

Liepmann HW, 1957, ELEMENTS GASDYNAMICS

← 1 2 3 4 5 →