In recent years, renewable energy has become increasingly popular, and offshore wind power generation has attracted attention due to fewer site restrictions and higher power generation efficiency compared to other methods. However, offshore wind power also faces challenges, such as raindrop impact erosion on turbine blades, which can reduce power generation efficiency. In this study, simulations were conducted using the Moving Particle Simulation (MPS) method to investigate the effects of liquid film thickness and surface roughness on stress inside a solid. Liquid film thicknesses of 0.1, 0.2, 0.4, and 0.8 mm were applied to the solid surface, and their effects on solid internal stress were analyzed. The results showed that the presence of a liquid film reduced internal stress, with the reduction rate generally increasing with film thickness. The effects of surface roughness values of 0.1 mm and 0.2 mm on stress distribution were also analyzed. The results indicated that both maximum stress and stress amplitude tended to increase in the presence of surface roughness compared to a smooth surface.
MASAKI et al. (Wed,) studied this question.