壁面微沟槽减阻技术研究进展

Research Progress of Wall Micro-groove Drag Reduction Technology

从减阻效果影响因素、减阻机理、协同减阻、实际应用等方面对壁面微沟槽减阻技术的研究进展进行归纳总结,对壁面微沟槽减阻研究方向进行展望。减阻效果影响因素包括沟槽结构、流场压力梯度等。介绍目前主流的减阻机理,关于减阻机理的各类假说仍存在争议。协同减阻的研究重点为超疏水壁面与微沟槽协同减阻、添加剂与微沟槽协同减阻。微沟槽减阻技术的实际应用涉及竞技泳衣、交通运输、流体输送等方面。研究方向为微沟槽减阻机理、微沟槽加工制造工艺、微沟槽对各类流场的适用性、微沟槽表面清洁技术。

The research progress of wall micro-groove drag reduction technology is summarized from the aspects of influencing factors of drag reduction effect,drag reduction mechanism,synergistic drag reduction and practical application,and the research direction of wall micro-groove drag reduction are prospected.The factors affecting the drag reduction effect include groove structure,flow field pressure gradient,etc.The current mainstream drag reduction mechanism is introduced,and various hypotheses about the drag reduction mechanism are still controversial.The research focus of synergistic drag reduction is the synergistic drag reduction of super-hydrophobic walls and micro-grooves,and the synergistic drag reduction of additives and micro-grooves.The practical application of micro-groove drag reduction technology involves competitive swimsuits,transportation,fluid transportation and other aspects.The research direction includes the drag reduction mechanism of micro-grooves,the processing and manufacturing process of micro-grooves,the applicability of micro-grooves to various flow fields,and the surface cleaning technology of micro-grooves.