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RANS Simulation of the Transitional Flow Around Airfoils at Low Reynolds Numbers for Steady and Unsteady Onset Conditions

Windte, J. and Radespiel, R. and Scholz, U. and Eisfeld, B. (2005) RANS Simulation of the Transitional Flow Around Airfoils at Low Reynolds Numbers for Steady and Unsteady Onset Conditions. In: Proceedings auf CD. RTO AVT Specialists Meeting on "Enhancement of NATO Military Flight Vehicle Performance by Management of Interacting Boundary Layer Transition and Separation", Prag (cz), 04.-07.10.2004.

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Abstract

RANS computations around airfoils are presented for flows where transition takes place across a laminar separation bubble. Transition locations are found employing the e_N method and a linear stability solver that uses the velocity and temperature profiles from a RANS-solution. Hereby, the known e_N-method is applied for the flows with steady onset conditions, whereas a new temporal scheme for the e_N-method is used for the flow around a plunging airfoil. Obtained numerical results are compared to hotwire-, pressure- and PIV-measurements of laminar separation bubbles.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:RANS Simulation of the Transitional Flow Around Airfoils at Low Reynolds Numbers for Steady and Unsteady Onset Conditions
Authors:
AuthorsInstitution or Email of Authors
Windte, J.Technische Universität Braunschweig
Radespiel, R.Technische Universität Braunschweig
Scholz, U.Technische Universität Braunschweig
Eisfeld, B.UNSPECIFIED
Date:2005
Journal or Publication Title:Proceedings auf CD
Editors:
EditorsEmail
RTO, UNSPECIFIED
Series Name:RTO-MP-AVT 111
Status:Published
Keywords:Laminar Separation, Linear Stability Theory, Transition, RANS turbulence models, FLOWer
Event Title:RTO AVT Specialists Meeting on "Enhancement of NATO Military Flight Vehicle Performance by Management of Interacting Boundary Layer Transition and Separation", Prag (cz), 04.-07.10.2004
Organizer:RTO
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Concepts & Integration
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:51

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