An advanced method for visualizing nonstationary flows will be presented, which is based on directed diffusion and transport of noise textures. The direction is given by a precalculated nonstationary flow field which is interpolated in time and used inside of a PDE formulation of an anisotropic diffusion-transport problem, which is solved by FEM/multigrid methods. The solution of this problems form a feature scale space toward coarser features in time. By the use of a blending strategy, solutions at different feature scales are used to stabilize the final output around a fixed feature scale