Particles for tracing turbulent liquid helium

被引：41
作者：
Bewley, Gregory P. [1 ,2 ]
Sreenivasan, K. R. [3 ]
Lathrop, Daniel P. [1 ]
机构：
[1] Univ Maryland, College Pk, MD 20740 USA
[2] Yale Univ, New Haven, CT 06520 USA
[3] Abdus Salaam Int Ctr Theoret Phys, I-34014 Trieste, Italy
来源：
EXPERIMENTS IN FLUIDS | 2008年 / 44卷 / 06期
基金：
美国国家航空航天局; 美国国家科学基金会;
关键词：
D O I：
10.1007/s00348-007-0444-6
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
We address the problem of making quantitative measurements of local flow velocities in turbulent liquid helium, using tracer particles. We survey and evaluate presently available particles and previous work to establish the need to develop new particles for the purpose. We present the first practical solution for visualizing fluid motions using a suspension of solid hydrogen particles with diameters of about 2 mu m. The hydrogen particles can be used to study flows with Taylor-microscale Reynolds numbers between 85 and 775. The particles can be used equally well with the PIV, LDV, or particle-tracking techniques.
引用
收藏
页码：887 / 896
页数：10
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