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DLR TAU-Code uRANS Turbofan Modeling for Aircraft Aerodynamics Investigations

Stürmer, Arne (2019) DLR TAU-Code uRANS Turbofan Modeling for Aircraft Aerodynamics Investigations. Aerospace, 6 (11). Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/aerospace6110121 ISSN 2226-4310

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Official URL: https://www.mdpi.com/2226-4310/6/11/121

Abstract

In the context of an increased focus on fuel efficiency and environmental impact, turbofan engine developments continue towards larger bypass ratio engine designs, with Ultra-High Bypass Ratio (UHBR) engines becoming a likely power plant option for future commercial transport aircraft. These engines promise low specific fuel consumption at the engine level, but the resulting size of the nacelle poses challenges in terms of the installation on the airframe. Thus, their integration on an aircraft requires careful consideration of complex engine–airframe interactions impacting performance, aeroelastics and aeroacoustics on both the airframe and the engine sides. As a partner in the EU funded Clean Sky 2 project ASPIRE, the DLR Institute of Aerodynamics and Flow Technology is contributing to an investigation of numerical analysis approaches, which draws on a generic representative UHBR engine configuration specifically designed in the frame of the project. In the present paper, project results are discussed, which aimed at demonstrating the suitability and accuracy of an unsteady RANS-based engine modeling approach in the context of external aerodynamics focused CFD simulations with the DLR TAU-Code. For this high-fidelity approach with a geometrically fully modeled fan stage, an in-depth study on spatial and temporal resolution requirements was performed, and the results were compared with simpler methods using classical engine boundary conditions. The primary aim is to identify the capabilities and shortcomings of these modeling approaches, and to develop a best-practice for the uRANS simulations as well as determine the best application scenarios.

Item URL in elib:https://elib.dlr.de/130397/
Document Type:Article
Title:DLR TAU-Code uRANS Turbofan Modeling for Aircraft Aerodynamics Investigations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stürmer, ArneArne.Stuermer (at) dlr.dehttps://orcid.org/0000-0002-5647-1800
Date:3 November 2019
Journal or Publication Title:Aerospace
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI :10.3390/aerospace6110121
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2226-4310
Status:Published
Keywords:aerodynamics, turbofan, propulsion, unsteady flow, simulation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics, L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Stürmer, Arne
Deposited On:28 Nov 2019 14:10
Last Modified:14 Dec 2019 04:24

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