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Transitional Flow Modeling and Application to High-Lift Multi-Element Airfoil Configurations

Krumbein, A. (2003) Transitional Flow Modeling and Application to High-Lift Multi-Element Airfoil Configurations. Journal of Aircraft, 40 (4), pp. 786-794.

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Abstract

To enhance its capabilities to handle flows with transition, a Reynolds averaged Navier-Stokes solver has been extended with regard to the modeling of transitional flow regions based on transition length models and the intermittency function. Because the full coupling of the solver to an e*-method that predicts the locations of transition onset has not yet been completed, the points of laminar separation are supposed to represent the transition locations in a first step. A method and an algorithm for detecting the laminar separation points are derived, and the intermittency function and two transition length models are implemented and validated for a selected high-lift multi-element test case. The background of the implementation work and the testing of the functionalities of the algorithms are focused on. Details of the implementation, which are consequences of an underlying transition prediction strategy, are outlined. the testing is described and then documented.

Document Type:Article
Additional Information:LIDO-Berichtsjahr=2004,
Title:Transitional Flow Modeling and Application to High-Lift Multi-Element Airfoil Configurations
Authors:
AuthorsInstitution or Email of Authors
Krumbein, A.UNSPECIFIED
Date:2003
Journal or Publication Title:Journal of Aircraft
Volume:40
Page Range:pp. 786-794
Status:Published
Keywords:RANS, transition prediction, transition modeling, multi-element airfoils
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:29 Nov 2005
Last Modified:12 Dec 2013 20:03

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