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Comparison of Nonlinear CFD with Time-Linearized CFD and CFD-Corrected DLM for Gust Encounter Simulations

Kaiser, Christoph and Friedewald, Diliana and Nitzsche, Jens (2017) Comparison of Nonlinear CFD with Time-Linearized CFD and CFD-Corrected DLM for Gust Encounter Simulations. In: IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics. IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics, 25.-28. Jun. 2017, Como, Italien. ISBN 978-88-97576-28-0

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Abstract

In this paper the multi-disciplinary simulation of unsteady flight maneuvers is carried out using reduced-order models (ROM) based on Reynolds Averaged Navier-Stokes (RANS) solutions. The analysis of gust encounters on the NASA Common Research model (CRM), a typical transport aircraft configuration, at transonic speed is conducted for two approaches employing time-linearized CFD and CFD-corrected DLM. The results are compared to nonlinear CFD and DLM simulations. The numerical prediction of gust loads requires the coupling of the disciplines aerodynamics, structural dynamics and flight mechanics. The aeroelastic coupling is realized in the frequency domain and in the time domain in terms of generalized coordinates employing a fluid-structure feedback loop.

Item URL in elib:https://elib.dlr.de/114653/
Document Type:Conference or Workshop Item (Speech)
Title:Comparison of Nonlinear CFD with Time-Linearized CFD and CFD-Corrected DLM for Gust Encounter Simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kaiser, ChristophChristoph.Kaiser (at) dlr.dehttps://orcid.org/0000-0001-9156-8352
Friedewald, DilianaDiliana.Friedewald (at) dlr.dehttps://orcid.org/0000-0002-5591-2459
Nitzsche, JensJens.Nitzsche (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics
Refereed publication:Yes
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
ISBN:978-88-97576-28-0
Status:Published
Keywords:aeroelasticity, reduced order model, time-linearized CFD, DLM correction, gust encounter, NASA common research model
Event Title:IFASD 2017 - International Forum on Aeroelasticity and Structural Dynamics
Event Location:Como, Italien
Event Type:international Conference
Event Dates:25.-28. Jun. 2017
Organizer:Politechnico Milano, Department of Aerospace Science and Technology
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 - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aerolastic Simulation
Deposited By: Kaiser, Christoph
Deposited On:23 Oct 2017 10:49
Last Modified:09 Feb 2018 11:42

Available Versions of this Item

  • Comparison of Nonlinear CFD with Time-Linearized CFD and CFD-Corrected DLM for Gust Encounter Simulations. (deposited 23 Oct 2017 10:49) [Currently Displayed]

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