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Numerical investigation of unsteady transitional boundary layer flows

Fehrs, Michael and Helm, Sebastian and Kaiser, Christoph (2019) Numerical investigation of unsteady transitional boundary layer flows. In: International Forum on Aeroelasticity and Structural Dynamics, IFASD 2019. IFASD 2019 – International Forum on Aeroelasticity and Structural Dynamics, 10.-13. Juni 2019, Savannah, GA (USA).

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Abstract

Different numerical models are available for the prediction of laminar-turbulent transition in boundary layer flows. Although these models gained some maturity in the application for steady flows, little is known about the applicability for unsteady problems in a broad frequency and Reynolds number range. This paper will investigate different unsteady transition prediction methods in external aerodynamics. Flow conditions are identified that unambiguously require an unsteady transition prediction and such that are likely to be covered by a quasi-steady approach. This will help to outline the requirements for future unsteady transition models and to trace deficiencies of existing methods.

Item URL in elib:https://elib.dlr.de/127887/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical investigation of unsteady transitional boundary layer flows
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Fehrs, MichaelMichael.Fehrs (at) dlr.deUNSPECIFIED
Helm, SebastianSebastian.Helm (at) dlr.deUNSPECIFIED
Kaiser, ChristophChristoph.Kaiser (at) dlr.dehttps://orcid.org/0000-0001-9156-8352
Date:June 2019
Journal or Publication Title:International Forum on Aeroelasticity and Structural Dynamics, IFASD 2019
Refereed publication:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:unsteady boundary layer transition, transition modeling, unsteady aerodynamics, airfoil flutter
Event Title:IFASD 2019 – International Forum on Aeroelasticity and Structural Dynamics
Event Location:Savannah, GA (USA)
Event Type:international Conference
Event Dates:10.-13. Juni 2019
Organizer:AIAA
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 > Aeroelastic Simulation
Deposited By: Fehrs, Michael
Deposited On:24 Jun 2019 11:22
Last Modified:24 Jun 2019 11:26

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