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DLM-Correction Method for Aerodynamic Gust Response Prediction

Dimitrov, Diliana and Thormann, Reik (2013) DLM-Correction Method for Aerodynamic Gust Response Prediction. In: Proceedings "IFASD 2013". International Forum on Aeroelasticity and Structural Dynamics (IFASD), 24.-26.06.2013, Bristol, England.

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Abstract

In this paper, aerodynamic gust responses are presented which are calculated using the DLM-correction method iSKEM [1]. iSKEM uses quasi-steady CFD data in order to enhance the DLM-based results. Comparisons between DLM, CFD and iSKEM for a rigid 3D swept wing show that the steady-state properties of the flowfield, such as separation and recompression-shocks, should always be taken into account. Quasi-steady corrections are only sufficient in the linear range of the steady lift polar and only for small gust amplitudes. In case of high angles of attack, i.e. with flow separation, steady corrections are not sufficient. Moreover, for high gust amplitudes even at low angles of attack linear methods will not be able to calculate the actually occurring load peaks.

Item URL in elib:https://elib.dlr.de/83762/
Document Type:Conference or Workshop Item (Speech)
Title:DLM-Correction Method for Aerodynamic Gust Response Prediction
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dimitrov, Dilianadiliana.dimitrov (at) dlr.deUNSPECIFIED
Thormann, Reikreik.thormann (at) dlr.deUNSPECIFIED
Date:June 2013
Journal or Publication Title:Proceedings "IFASD 2013"
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Gust, ROM, DLM, AIC-Correction, Transonic Flow
Event Title:International Forum on Aeroelasticity and Structural Dynamics (IFASD)
Event Location:Bristol, England
Event Type:international Conference
Event Dates:24.-26.06.2013
Organizer:Royal Aeronautical Socieaty
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Institute of Aeroelasticity > Aeroelastic Simulations
Deposited By: Friedewald, Diliana
Deposited On:15 Aug 2013 11:02
Last Modified:08 May 2014 23:24

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