Advances of drag-reducing surface technologies in turbulence based on boundary layer control
Advances of drag-reducing surface technologies in turbulence based on boundary layer control
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DOI：
10.1016/s1001-6058(15)60507-8
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发表时间：
2015-10-01
影响因子：
2.5
通讯作者：
Smith, Robert
中科院分区：
文献类型：
--
作者：
Luo Yuehao;Wang Liguo;Smith, Robert
我们的生存环境被湍流所包围，这也是全球能源消耗和温室气体排放的一个关注点，而固液/固气界面上的粘性力是湍流的重要组成部分。最大限度地减小湍流中的摩擦力是目前亟待解决的问题。本文综述了基于边界层控制的各种减阻节能技术，重点介绍了高分子减阻添加剂、微观形貌、超疏水表面、微气泡、加热壁、振动柔性壁和复合减阻方法。此外，还讨论了基于边界层控制的各种减阻机理及其在流体工程中的应用前景。本文的研究不仅有助于更好地理解减阻机理，而且为改进现有的减阻和节能技术提供了新的视角。
Our living environment is surrounded by turbulence, which is also a concern of the global energy consumption and the greenhouse gas emission, and the viscous force on the solid-liquid/solid-gas interface is an important part of the turbulence. Reducing friction force in turbulence to the greatest extent is becoming an urgent issue to be resolved at present. In this paper, the various state-of-the-art approaches of drag-reducing and energy-saving technologies based on the boundary layer control are reviewed, focusing on the polymer drag reduction additives, the micro-morphology, the super-hydrophobic surface, the micro air bubbles, the heating wall, the vibrant flexible wall and the composite drag reduction methods. In addition, the mechanisms of different drag reductions based on the boundary layer control and the potential applications in fluid engineering are discussed. This paper aims not only to contribute to a better understanding of drag reduction mechanisms, but also to offer new perspectives to improve the current drag-reducing and energy saving technologies.