Proper Orthogonal Decomposition of Flow Structures around a Surface-Mounted Cube Computed with Detached-Eddy Simulation

2009-01-0331

04/20/2009

Event
SAE World Congress & Exhibition
Authors Abstract
Content
In this paper the flow passing a cube mounted in a channel is studied via detached-eddy simulation (DES). The results are compared to previous studies, where large eddy simulation (LES) have been used. The mean velocity profile found in this paper was found to match with other references above the cube but not behind the cube. The shear stress was underpredicted by the DES computations on top of the cube. Behind the cube the LES and experimental studies show a much more smeared shear layer than the DES calculation. The proper orthogonal decomposition (POD) modes are calculated and investigated. The first mode, which corresponds to the mean flow, was found to contain the flow structure of the large separation above the cube. The POD modes calculated from the DES results show higher percentage of energy in the first mode than the POD calculated from LES results.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-0331
Pages
11
Citation
Muld, T., Efraimsson, G., and Henningson, D., "Proper Orthogonal Decomposition of Flow Structures around a Surface-Mounted Cube Computed with Detached-Eddy Simulation," SAE Technical Paper 2009-01-0331, 2009, https://doi.org/10.4271/2009-01-0331.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-0331
Content Type
Technical Paper
Language
English