Motion of micron-size particles in turbulent helium II

被引：36

作者：

Sergeev, Y. A. ^{[1
]}

Barenghi, C. F.

Kivotides, D.

机构：

[1] Univ Newcastle, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Univ Newcastle, Sch Math, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 18期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevB.74.184506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surprising result of a recent experiment in turbulent helium II is that micron-size tracer particles move with about half the speed of the imposed normal fluid. We develop a theory of the interaction of small spheres with quantized vortices and predict that the particles' slip velocity (resulting from the balance of buoyancy and Stokes drag forces) must be corrected by an amount which is proportional to the normal fluid velocity, in quantitative agreement with the observations.

引用

页数：5

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