DNS of Simple Verification Test Cases Using OpenFOAM

Kurzfassung

Direct Numerical Simulation (DNS) is a numerical technique to resolve turbulent flow down to the smallest scales of the flow-field. Since this approach requires highly accurate and efficient numerical solvers for calculations on extremely fine grids, the DNS solver of the OpenFOAM software package will be validated within the scope of thís work. To do so, generic two- and three-dimensional test cases such as the Decay of Isotropic Turbulence (DIT) and the Taylor-Green (TG) vortex are calculated. Both cases have been investigated to assess the capabilities of the software OpenFOAM as a DNS solver by comparing the results with reference data from literature.