Sökning: "unstructured grids"

Visar resultat 16 - 16 av 16 avhandlingar innehållade orden unstructured grids.

1. 16. Anisotropy-resolving subgrid-scale modelling using explicit algebraic closures for large eddy simulation

   Författare :Amin Rasam; Arne Johansson; Bernard Geurts; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; large eddy simulation; explicit algebraic subgridscale model; passive scalar; stochastic modelling; periodic hill flow; Engineering Mechanics; Teknisk mekanik;

   Sammanfattning : The present thesis deals with the development and performance analysis ofanisotropy-resolving models for the small, unresolved scales (”sub-grid scales”,SGS) in large eddy simulation (LES). The models are characterised by a descriptionof anisotropy by use of explicit algebraic models for both the subgridscale(SGS) stress tensor (EASSM) and SGS scalar flux vector (EASSFM). LÄS MER