Abstract
In recent years, shipping-related CO2 emission accounts for 3% of the overall CO2 emission, and the corresponding direct economic losses have reached tens of billions of dollars. Reduce the resistance during motion, as one of effective countermeasures for saving energy and reducing greenhouse gas emissions produced by marine vehicles, has been widely attracted by scholars. After billions of years of natural selection, various organisms have evolved functional surfaces, especially some aquatic animals and plants. Due to the skin or surface of some aquatic organisms have the characteristics of low resistance or non-adhesion, they can swim quickly in the water and consume less energy. Since the last century, extensive studies have been conducted on animals and plants such as sharks, dolphins, lotus leaves and so on. It has been reviewed in the paper that the research progress of bionic drag reduction technologies inspired from typical animals and plants, including drag reduction by imitating shark skin, dolphin surface, jet function, lotus leaf surface and mucus. We hope this review can be helpful to comprehensively understanding the research status of bionic drag reduction technology and developing more efficient drag reduction methods, which is of great significance to save energy and build the marine environment.
