| GUO Le-yang,RUAN Hai-ni,LI Wen-ge,GAO Yuan,JIANG Tao,LIU Yan-bo,WU Xin-feng,ZHAO Yuan-tao.Research Progress of Surface Engineering Technology for Ship Drag Reduction[J],51(9):53-64, 73 |
| Research Progress of Surface Engineering Technology for Ship Drag Reduction |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.09.005 |
| KeyWord:bionic structure flexible coating super hydrophobic antifouling coating ship drag reduction |
| Author | Institution |
| GUO Le-yang |
Merchant Marine College, Shanghai Maritime University, Shanghai , China |
| RUAN Hai-ni |
Merchant Marine College, Shanghai Maritime University, Shanghai , China |
| LI Wen-ge |
Merchant Marine College, Shanghai Maritime University, Shanghai , China |
| GAO Yuan |
Shanghai MORFANT New Material Technology Co., LTD, Shanghai , China |
| JIANG Tao |
Merchant Marine College, Shanghai Maritime University, Shanghai , China |
| LIU Yan-bo |
Shanghai Nano Technology and Industry Development Promotion Center, Shanghai , China |
| WU Xin-feng |
Merchant Marine College, Shanghai Maritime University, Shanghai , China |
| ZHAO Yuan-tao |
Merchant Marine College, Shanghai Maritime University, Shanghai , China |
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| Abstract: |
| Drag reduction of ship is the key to realize energy saving, emission reduction and green low-carbon ship building. Ship drag reduction methods can be divided into active drag reduction and passive drag reduction. The former mainly includes ship structure optimization design, polymer drag reduction, air curtain drag reduction and so on. Active drag reduction reduce drag by optimizing the design of the ship, adding polymers or bubble curtains to the fluid. Passive drag reduction methods are more varied, which include bionic structure, flexible coating, super hydrophobic coating and antifouling coating. According to the mechanism, ship drag reduction is divided into structural type and physicochemical type in the paper. Structural drag reduction achieves the drag reduction by biomimetic construction of aquatic surface structures (such as shark skin and fish scales). The main types of biomimetic texture include pits, grooves, convex hull, ripples, scales and composite types. Physicochemical drag reduction gives the surface certain characteristics such as flexibility, super hydrophobicity, antifouling, etc. It achieves the purpose of drag reduction by reducing surface friction resistance, improving boundary stability and reducing dead weight. The construction methods of structural drag reduction surface mainly include wire cutting technology (EDM), rolling forming technology, embossing method, casting and turning method, coating spraying processing technology, laser etching method, three-dimensional printing method, etc. The construction methods of physicochemical drag reduction surface mainly include coating spraying processing technology, spinning coating method, chemical corrosion method, sol-gel method, electrochemical deposition, electrospinning, phase separation, plasma treatment and so on. In recent years, the research achievements of active drag reduction methods are relatively mature. The research on passive drag reduction methods is also increasing, but the research on passive drag reduction methods mainly focuses on drag reduction mechanism, drag reduction construction method and drag reduction effect simulation. The simulation and field experiment of passive drag reduction method and the research on the cooperative mechanism of multiple drag reduction methods are still lacking. Both the structural drag reduction surface and the physicochemical drag reduction surface have been proved to be effective in reducing drag. However, the single drag reduction mechanism will have unavoidable defects and bottlenecks. For example, in biomimetic structures, it is difficult to greatly improve drag reduction by simply changing the shape and distribution of grooves. The synergistic effect of structural drag reduction and physicochemical drag reduction has been proved to break through the limitations of the single drag reduction theory. The drag reduction efficiency of the synergistic effect is greater than that of the simple structural drag reduction, and the maximum drag reduction efficiency is even 50%, which can better achieve the ship drag reduction. Based on these, the research status of above drag reduction technology is reviewed in this paper. The mechanism and construction method of drag reduction, as well as the problems and poor effect of single drag reduction method are summarized. The synergy of various drag reduction methods are put forward to solve the existing problems. Finally, the development trend of ship drag reduction technology is indicated, which guide the research and application of ship drag reduction. |
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