Momentum and mass transfer on sandpaper-roughened surfaces in pipe flow
Momentum and mass transfer on sandpaper-roughened surfaces in pipe flow
复制标题
管流中砂纸粗糙表面的动量和质量传递
DOI：
10.1016/j.ijheatmasstransfer.2004.12.030
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Saimir A. Lolja
中科院分区：
文献类型：
--
作者：
Saimir A. Lolja
一系列的三个电化学获得的镍管具有不同的表面粗糙度已在这项研究中使用。在动量传递方面，这些粗糙表面在摩擦因子、摩擦相似函数和粗糙-光滑摩擦因子比方面表现出相似的模式。利用铁氰化钾和亚铁氰化钾的氧化还原反应的电化学技术研究了传质。在雷诺数为3000- 30，000的范围内，传质增强的增益对摩擦发展是正的。
A series of three electrochemically obtained nickel pipes with different surface roughness degree has been used in this study. In respect to momentum transfer, these rough surfaces exhibit similar patterns in terms of friction factor, friction similarity function, and rough-to-smooth friction factor ratio. The mass transfer is investigated with the electrochemical technique which exploits the red-ox reactions of potassium ferri- and ferro-cyanides. The gain in mass transfer enhancement is positive against the friction development in the range 3000–30,000 for the Reynolds number.