Effect of a Polymer Additive on Heat Transport in Turbulent Rayleigh-Benard Convection

被引：54
|
作者：
Ahlers, Guenter [1 ]
Nikolaenko, Alexei [1 ]
机构：
[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 03期
基金：
美国国家科学基金会;
关键词：
DRAG REDUCTION;
D O I：
10.1103/PhysRevLett.104.034503
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Measurements of heat transport, as expressed by the Nusselt number Nu, are reported for turbulent Rayleigh-Benard convection of water containing up to 120 ppm by weight of poly-[ethylene oxide] with a molecular weight of 4 x 10(6) g/mole. Over the Rayleigh number range 5 x 10(9) less than or similar to Ra less than or similar to 7 x 10(10) Nu is smaller than it is for pure water by up to 10%.
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页数：3
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