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An Overview of High Fidelity CFD Engine Modeling

Spinner, Sebastian and Trost, Marco and Schnell, Rainer (2022) An Overview of High Fidelity CFD Engine Modeling. In: AIAA SciTech 2022 Forum, pp. 1-14. AIAA SciTech Forum and Exposition 2022, 2022-01-03 - 2022-01-07, San Diego, USA. doi: 10.2514/6.2022-0430. ISBN 978-162410631-6.

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Official URL: https://arc.aiaa.org/doi/10.2514/6.2022-0430


In this work we give an overview over state of the art engine performance modeling with CFD. For both flow solvers predominantly used at DLR we show the available methods to model aircraft engine performance with high fidelity. Within the TAU code, a solver mainly used for outer aerodynamics, full annulus uRANS simulations with a rotating fan may be used to model the engine accurately. In RANS simulations an actuator disk method or a body force model are available to represent the fan stage. In the flow solver TRACE, primarily developed to model internal turbomachinery flow, single passage RANS simulations with mixing-planes or uRANS simulations with time-shifted boundary conditions can be used. Additionally full annulus uRANS simulations may be performed as well. A test case is run with the aforementioned engine modeling methods allowing for comparison and evaluation of the different models. Integral engine performance metrics and radial distributions are compared to assess the capabilities of different simulation approaches. High fidelity 360° uRANS methods deliver accurate results but are costly in terms of time and resources. The RANS methods presented pose as viable alternatives to model engine performance metrics requiring only a fraction of the resources of an unsteady simulation. Single passage uRANS simulations utilizing time shifted boundary conditions fill the gap between full annulus uRANS and RANS methods by simulating unsteady aerodynamic phenomena with an acceptable demand for computational resources.

Item URL in elib:https://elib.dlr.de/188998/
Document Type:Conference or Workshop Item (Speech)
Title:An Overview of High Fidelity CFD Engine Modeling
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Spinner, SebastianUNSPECIFIEDhttps://orcid.org/0000-0002-3661-6814UNSPECIFIED
Date:January 2022
Journal or Publication Title:AIAA SciTech 2022 Forum
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-14
Keywords:CFD, Turbomachinery, Modeling, Boundary Condition
Event Title:AIAA SciTech Forum and Exposition 2022
Event Location:San Diego, USA
Event Type:international Conference
Event Start Date:3 January 2022
Event End Date:7 January 2022
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: Braunschweig , Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Institute of Propulsion Technology > Fan and Compressor
Deposited By: Spinner, Sebastian
Deposited On:02 Nov 2022 12:11
Last Modified:24 Apr 2024 20:50

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