Abstract
On the investigation of biomimetic drag-reducing surface, direct replication of the firm scarfskins on low-resistance creatures to form biomimetic drag-reducing surfaces with relatively vivid morphology relative to the living prototype is a new attempt of the bio-replicated forming technology. Taking shark skin as the bio-replication template, the hot embossing method was applied to the micro-replication of its outward morphology. Furthermore, the skins were jointed together to form the drag-reducing surface in large area. The results of the resistance measurements in a water tunnel according to the flat-plate sample pieces have shown that the biomimetic shark-skin coating fabricated by the bio-replicated forming method has significant drag reduction effect, and that the drag reduction efficiency reached 8.25% in the test conditions.
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Supported by the National Natural Science Foundation of China (Grant No. 50775006) and the National Defense Fundamental Research Foundation of China (Grant No. D2120060002)
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Han, X., Zhang, D., Li, X. et al. Bio-replicated forming of the biomimetic drag-reducing surfaces in large area based on shark skin. Chin. Sci. Bull. 53, 1587–1592 (2008). https://doi.org/10.1007/s11434-008-0219-3
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DOI: https://doi.org/10.1007/s11434-008-0219-3