Direct Numerical Simulations and Large Eddy Simulations of turbulent pipe and channel flows
Turbulent pipe flows occur in many technical applications. The pressure drop and the noise generation produced in complex pipe geometries, such as orifices, bifurcations, expansions and bends, are of particular interest. Numerical simulations using Computational Fluid Dynamics (CFD) methods which are based on solutions of the Reynolds-averaged Navier-Stokes equations (RANS) do not provide reliable prediction of the turbulent transport processes and the generated noise. Therefore, highly accurate techniques like Direct Numerical Simulation (DNS) and Large-Eddy Simulation (LES) are applied in order to validate RANS results and improve the physical understanding of the involved mechanisms.
German Aerospace Center (DLR)
Institute of Aerodynamics and Flow Technology, Department Ground Vehicles
Phone: +49 551 709-2132