Bio-replicated forming of the biomimetic drag-reducing surfaces in large area based on shark skin

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2008,（10）
• 页码范围: 1587-1592
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11434-008-0219-3

摘要

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 sur-face 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 effi-ciency reached 8.25% in the test conditions.