摘要: An improved fractional Brownian motion (fBm) model using fractal geometry is outlined motion. It produces more realistic flow trajectories than traditional does. The fBm used for producing both super diffusive and sub particle paths, therefore, the non-Fickian diffusion of clouds can be modelled. are released in an idealised coastal bay tracking method simulation cloud spreading bay. There a noticeable increase rate cloud. variation Hurst exponent lead to area being affected by contaminant which not picked up regular models. Using allows flexibility fluids.