elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Investigation of Embedded Wall-Modeled LES for the Prediction of Smooth-Body Separation in a Diffuser

Strampe, Laura (2021) Investigation of Embedded Wall-Modeled LES for the Prediction of Smooth-Body Separation in a Diffuser. Bachelor's, Georg-August-Universität Göttingen.

Full text not available from this repository.

Abstract

Embedded Wall-Modeled LES is investigated and validated through the unsteady flow simulation of a simple diffuser flow. The near-wall turbulence in the embedded LES region is modeled by the Improved Delayed Detached Eddy Simulation, while the development of a turbulent boundary layer inside that region is aided by the Synthetic Turbulence Generator. The subjects of investigation include the flow averaging time delay for hybrid simulations based on preliminary RANS calculations, the grid sensitivity of solutions derived through the use of synthetic turbulence and the dampening of turbulent vortices towards the outflow boundary by grid stretching. During these investigations, the possibility of hybrid simulations on coarser grids through the use of local grid refinement around the synthetic turbulence injection position is analyzed.

Item URL in elib:https://elib.dlr.de/138080/
Document Type:Thesis (Bachelor's)
Title:Investigation of Embedded Wall-Modeled LES for the Prediction of Smooth-Body Separation in a Diffuser
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Strampe, Lauralaura.strampe (at) dlr.deUNSPECIFIED
Date:2021
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:58
Status:Published
Keywords:Embedded wall-modeled LES, Hybrid RANS/LES, Grid sensitivity, STG, Local grid refinement, IDDES, Diffuser flow
Institution:Georg-August-Universität Göttingen
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Digital Technologies
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Deposited By: Probst, Axel
Deposited On:22 Apr 2021 13:56
Last Modified:24 Nov 2021 18:00

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.