Patterned Turbulence in Liquid Metal Flow: Computational Reconstruction of the Hartmann Experiment

被引：37

作者：

Krasnov, Dmitry ^{[1
]}

Thess, Andre ^{[1
]}

Boeck, Thomas ^{[1
]}

Zhao, Yurong ^{[2
]}

Zikanov, Oleg ^{[2
]}

机构：

[1] Ilmenau Univ Technol, Inst Thermodynam & Fluid Mech, D-98684 Ilmenau, Germany

[2] Univ Michigan, Dept Mech Engn, Dearborn, MI 48128 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 08期

基金：

美国国家科学基金会;

关键词：

PIPE-FLOW; TRANSITION; INSTABILITY; REYNOLDS; LAYER;

D O I：

10.1103/PhysRevLett.110.084501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present results of a numerical analysis of Hartmann's historical experiments on flows of mercury in pipes and ducts under the influence of magnetic fields. The computed critical parameters for the laminar-turbulent transition as well as the friction coefficients are in excellent agreement with Hartmann's data. The simulations provide a first detailed view of the flow structures that are experimentally inaccessible. Novel flow regimes with localized turbulent spots near the sidewalls parallel to the magnetic field and otherwise laminar flow are discovered. We finally suggest how these predictions can be tested in a transparent fluid using optical flow measurement. DOI: 10.1103/PhysRevLett.110.084501

引用

页数：5

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