Hendy S C, Lund N J
MacDiarmid Institute for Advanced Materials and Nanotechnology, Industrial Research Ltd, Lower Hutt, New Zealand. MacDiarmid Institute of Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
J Phys Condens Matter. 2009 Apr 8;21(14):144202. doi: 10.1088/0953-8984/21/14/144202. Epub 2009 Mar 18.
We consider effective slip lengths for flows of simple liquids over surfaces contaminated by gaseous nanobubbles. In particular, we examine whether the effects of finite slip over the liquid-bubble interface are important in limiting effective slip lengths over such surfaces. Using an expression that interpolates between the perfect slip and finite slip regimes for flow over bubbles, we conclude that for the bubble dimensions and coverages typically reported in the literature the effects of finite slip are secondary, reducing effective slip lengths by only 10%. Further, we find that nanobubbles do not significantly increase slip lengths beyond those reported for bare hydrophobic surfaces.
我们考虑了简单液体在被气态纳米气泡污染的表面上流动时的有效滑移长度。特别地，我们研究了液 - 泡界面上有限滑移的影响对于限制此类表面上的有效滑移长度是否重要。通过使用一个在气泡流动的完全滑移和有限滑移状态之间进行插值的表达式，我们得出结论，对于文献中通常报道的气泡尺寸和覆盖率，有限滑移的影响是次要的，仅使有效滑移长度减少10%。此外，我们发现纳米气泡不会使滑移长度显著增加到超过裸疏水表面所报道的数值。
