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A Numerical Test Rig for Turbomachinery Flows Based on Large Eddy Simulations With a High-Order Discontinuous Galerkin Scheme - Part II: Shock Capturing and Transonic Flows

Klose, Björn and Morsbach, Christian and Bergmann, Michael and Hergt, Alexander and Klinner, Joachim and Grund, Sebastian and Kügeler, Edmund (2023) A Numerical Test Rig for Turbomachinery Flows Based on Large Eddy Simulations With a High-Order Discontinuous Galerkin Scheme - Part II: Shock Capturing and Transonic Flows. ASME Journal of Turbomachinery, 146 (2). American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4063827. ISSN 0889-504X.

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Official URL: https://asmedigitalcollection.asme.org/turbomachinery/article/146/2/021006/1169438/A-Numerical-Test-Rig-for-Turbomachinery-Flows

Abstract

In the second paper of this three-part series, we focus on the simulation of transonic test cases for turbomachinery applications using a high-order discontinuous Galerkin spectral element method (DGSEM). High-fidelity simulations of transonic compressors and turbines are particularly challenging, as they typically occur at high Reynolds numbers and require additional treatment to reliably capture the shock waves characterizing such flows. A recently developed finite-volume subcell shock capturing scheme tailored for the DGSEM is applied and evaluated with regard to the shock sensor. To this end, we conduct implicit large eddy simulations of a high-pressure turbine cascade from the public literature and a transonic compressor cascade measured at the German Aerospace Center, both at a high Reynolds number above 10E6. Based on the results, we examine modal-energy and flow-feature based shock indicator functions, compare the simulation data to experimental and numerical studies, and present an analysis of the unsteady features of the flows.

Item URL in elib:https://elib.dlr.de/199343/
Document Type:Article
Title:A Numerical Test Rig for Turbomachinery Flows Based on Large Eddy Simulations With a High-Order Discontinuous Galerkin Scheme - Part II: Shock Capturing and Transonic Flows
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Klose, BjörnUNSPECIFIEDhttps://orcid.org/0000-0002-8069-7885UNSPECIFIED
Morsbach, ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-6254-6979UNSPECIFIED
Bergmann, MichaelUNSPECIFIEDhttps://orcid.org/0000-0003-0553-5584UNSPECIFIED
Hergt, AlexanderUNSPECIFIEDhttps://orcid.org/0009-0008-1643-7326146992848
Klinner, JoachimUNSPECIFIEDhttps://orcid.org/0000-0003-2709-9664146992849
Grund, SebastianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kügeler, EdmundUNSPECIFIEDhttps://orcid.org/0000-0002-9719-626XUNSPECIFIED
Date:13 November 2023
Journal or Publication Title:ASME Journal of Turbomachinery
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:146
DOI:10.1115/1.4063827
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0889-504X
Status:Published
Keywords:large eddy simulation, discontinuous Galerkin spectral element method, transonic flow, shock capturing, computational fluid dynamics (CFD), fluid dynamics and heat transfer phenomena in compressor and turbine components of gas turbine engines
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Virtual Engine
Location: Köln-Porz
Institutes and Institutions:Institute of Test and Simulation for Gas Turbines > Virtual Engine and Numerical Methods
Institute of Propulsion Technology > Numerical Methodes
Institute of Propulsion Technology > Fan and Compressor
Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Klose, Björn
Deposited On:20 Nov 2023 07:07
Last Modified:20 Nov 2023 07:07

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