Rusting and corroding simulation taking into account chemical reaction processes

In recent years, expressions close to realities have become possible thanks to the technologically advanced computer graphics. Secular change and weathering are important factors to create realistic computer graphics images. Metal rust is an important secular change and there are much research work on rust [Kanazawa et al. 2015]. Although the rust forming processes vary according to coating rain-water and seawater, dissolved oxygen contents of them and flowing water effects, no rust forming methods which have examined the object geometry of models and chemical reaction processes exist as far as we know. Our proposed method calculates water flowing on 3D models to reproduce the process of corrosion which advances from the surface region coated with water. Our corrosion simulation model takes into account the quantity of coating water and the chemical reaction processes. As a result, we confirm that the images close to the rust formed in reality can be obtained.