Tricoche, XavierScheuermann, GerikHagen, HansClauss, StefanDavid S. Ebert and Jean M. Favre and Ronald Peikert2014-01-302014-01-3020013-211-83674-81727-5296https://doi.org/10.2312/VisSym/VisSym01/107-116Topology-based visualization of planar turbulent flows results in visual clutter due to the presence of numerous features of very small scale. In this paper, we attack this problem with a topology simplification method for vector and tensor fields defined on irregular grids. This is the generalization of previous work dealing with structured grids. The method works for all interpolation schemes.