Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids
Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids
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DOI：
10.1063/1.2360892
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发表时间：
2006-10-09
影响因子：
4
通讯作者：
Hu, L. W.
中科院分区：
文献类型：
--
作者：
Kim, S. J.;Bang, I. C.;Hu, L. W.
纳米颗粒的多孔层在加热表面上的积聚发生在含有氧化铝、氧化锆或二氧化硅纳米颗粒的纳米流体沸腾时。该层显着提高了表面的润湿性，如所示的减少的静态接触角的纳米流体沸腾的表面相比，纯水沸腾的表面。接触角减小归因于纳米颗粒层的存在所带来的表面能和表面形态的变化。高的表面润湿性可以合理地解释纳米流体沸腾临界热流密度的增强。(c)2006年，美国物理学会。
Buildup of a porous layer of nanoparticles on the heated surface occurs upon boiling of nanofluids containing alumina, zirconia, or silica nanoparticles. This layer significantly improves the surface wettability, as shown by a reduction of the static contact angle on the nanofluid-boiled surfaces compared with the pure-water-boiled surfaces. The contact angle reduction is attributed to changes in surface energy and surface morphology brought about by the presence of the nanoparticle layer. The high surface wettability can plausibly explain the boiling critical heat flux enhancement in nanofluids. (c) 2006 American Institute of Physics.