| Transport in anisotropic turbulence, which is characterised by large scale separation between the size of turbulent eddies and filaments of tracer material, is a topic which is of enormous importance for industrial and geophysical flow phenomena. A few examples are: mixing in chemical reactors, combustion, transport of fly ashes in burners, advection of pollution in geophysical flows. To unravel the influence of flow anisotropy on transport processes one needs a tool to e ectively combine the computation of the local small-scale dynamics of the tracer density on simple grids with the large-scale computation of turbulence by a so-called local defect correction technique (LDC). The researchprogramme consists of three supplementary research lines: 1) fundamental research on transport in anisotropic turbulence in simple geometries, 2) application of LDC to investigate tracer transport and, when implementation of LDC is matured, to investigate developing turbulent flows such as boundary layer transition, and 3) thereby expanding the software platform NumLab which facilitates simulations by allowing user-friendly interaction of di erent DNS algorithms, geometries, transport phenomena etc. Collaboration between the various groups at TU/e is targetted at combining the experimental and numerical expertise on turbulence (Mechanical Engineering and Physics Departments). |
