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Semi-/empirical transition prediction and application to an isolated rotor in hover

Heister, C. C. (2012) Semi-/empirical transition prediction and application to an isolated rotor in hover. International Journal of Engineering Systems Modelling and Simulation, 4 (1/2), pp. 69-78. Inderscience Enterprises Ltd.

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Abstract

The transition prediction capability of two semi-/empirical criteria originating from fixed wing applications is studied for steady, rotary wing application. This includes the AHD criterion, and two variants of the Michel criterion. Both criteria are used with approximated boundary layer data for improved numerical robustness of the prediction algorithm in an industrial context. The transition criteria have been implemented in the structured flow solver FLOWer of the German Aerospace Center (DLR). A two-dimensional airfoil test case (Somers NLF(1)-0416) is used to study the prediction accuracy of the criteria, comparing three different one and two equation turbulence models. A three-dimensional rotor test case at hover (DLR Bo 105 flight test) serves to validate the computed transition locations. A relative comparison of the predicted rotor efficiency illustrates the differences in performance prediction between the AHD and the Michel criterion.

Document Type:Article
Title:Semi-/empirical transition prediction and application to an isolated rotor in hover
Authors:
AuthorsInstitution or Email of Authors
Heister, C. C.christoph.heister@dlr.de
Date:2012
Journal or Publication Title:International Journal of Engineering Systems Modelling and Simulation
Volume:4
Page Range:pp. 69-78
Editors:
EditorsEmail
Chanetz, Brunobruno.chanetz@onera.fr
Délery, Jeanjean.delery@free.fr
Baïri, Abderrahmaneabairi@u-paris10.fr
Publisher:Inderscience Enterprises Ltd
Status:Published
Keywords:transition; prediction; empirical; AHD; Michel; boundary layer; approximation; CFD; FLOWer; helicopter; rotor; hover; performance; flight test.
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: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Aerodynamics and Flow Technology
Deposited By: Christoph Heister
Deposited On:24 Jan 2012 09:54
Last Modified:12 Dec 2013 21:30

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