超撥水面がリブレットの粒子付着・洗浄特性に及ぼす影響

抄録

When riblets are used in an atmospheric environment, the adhesion of particles to the grooves reduces the friction reduction performance. In this study, we aimed to clarify the change in particle adhesion characteristics due to the superhydrophobic surface, to verify the effect of the superhydrophobic surface on the cleaning effect of accumulated particles, and to clarify the change in particle adhesion characteristics due to the presence of a superhydrophobic surface. The cleaning effect was evaluated by spraying water mist onto the riblets, counting the number of particles attached before and after cleaning using image analysis, and performing statistical processing. The riblets with the superhydrophobic surface had a removal rate of 90.5%, while the normal riblets had a removal rate of 88.1%, showing no significant difference. It is thought that the shape of the riblets affected the behavior and surface structure of the water droplets.