Project
Higher-order finite difference methods for DNS/LES in complex geometries
Project DescriptionThe aim of this project is to perform direct numerical simulations (DNS) of turb ulent flow phenomena in complex geometries. A so far unique discretisation method of the incompressible Navier-Stokes equations will be used. It is based on higher-order difference methods which allow for the use of curvilinear, staggered meshes. The compact higher-order stencils make it more efficient and less memory demanding than the standard second-order methods routinely used today. The final goal is to simulate turbulence phenomena on a wing profile geometry. This is an important step towards realistic applications of a DNS method. Another important issue is to simulate turbulent flow separation in an asymmetric diffuser, a case where ongoing experiments is performed at the department of Mechanics. In a further step the DNS code will form a basis for inclusion of large eddy simulation (LES) models. The research will build on the compact higher-order finite difference methods developed in an ongoing cooperation project between the department of Mechanics, KTH and TDB, Uppsala University.
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