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Comparison of different approaches for gust modeling in the CFD Code TAU

Heinrich, Ralf and Reimer, Lars (2013) Comparison of different approaches for gust modeling in the CFD Code TAU. International Forum on Aeroelasticity & Structural Dynamics 2013, 24. - 27. Juni 2013, Bristol, Großbritannien.

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Abstract

Two different methods for modeling of gusts have been implemented into the CFD-code TAU. The first one is the so called disturbance velocity approach, a simplified method which allows predicting the influence of a gust on the aircraft, but not the influence of the aircraft aerodynamics on the shape of the gust. Alternatively, an unsteady boundary condition has been implemented to feed in the gust into the flow field. Thereby the mutual interaction of gust and aircraft is captured. Both methods are compared in order to access the validity range of the simplified approach. A result is that for gust wavelength larger than two reference chords the agreement of the highly accurate method and simplified approach is good. For such cases the simplified approach has been used to simulate the gust interaction of a generic fighter aircraft and an A340 configuration, taking into account the reaction of the aircraft due to the additional loads.

Item URL in elib:https://elib.dlr.de/85834/
Document Type:Conference or Workshop Item (Speech)
Title:Comparison of different approaches for gust modeling in the CFD Code TAU
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heinrich, Ralfralf.heinrich (at) dlr.deUNSPECIFIED
Reimer, Larslars.reimer (at) dlr.deUNSPECIFIED
Date:August 2013
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Gust response, Disturbance Velocity Approach, Resolved Gust Approach
Event Title:International Forum on Aeroelasticity & Structural Dynamics 2013
Event Location:Bristol, Großbritannien
Event Type:international Conference
Event Dates:24. - 27. Juni 2013
Organizer:Royal Aeronautical Society
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: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Heinrich, Dr.-Ing. Ralf
Deposited On:27 Nov 2013 14:38
Last Modified:31 Jul 2019 19:43

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