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Numerical Investigation of Unsteady Tangential Blowing at the Rudder of a Vertical Tailplane Airfoil

Kröhnert, Anna (2016) Numerical Investigation of Unsteady Tangential Blowing at the Rudder of a Vertical Tailplane Airfoil. In: New Results in Numerical and Experimental Fluid Mechanics X Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 132. Springer Verlag. pp. 39-49. ISBN 978-3-319-27278-8. ISSN 1612-2909

Full text not available from this repository.

Official URL: http://www.springer.com/de/book/9783319272788

Abstract

A numerical 2D investigation of a vertical tailplane airfoil using active flow control with tangential blowing over the rudder shoulder is conducted. The aim of the flow control application is to increase the maximum lift or side force, which can be created by the vertical tailplane, at critical flight conditions like the one-engine-inoperative failure case. In this case the rudder is highly deflected, leading to a large seperation on the rudder without blowing. With constant tangential blowing at the rudder shoulder it was shown that fully attached flow can be achieved. To increase the efficiency, pulsed blowing is applied in the present study, leading to a similar increase in the lift coefficient at a reduced actuation mass flow rate requirement. Parameters like the blowing momentum coefficient and the dimensionless frequency are varied and the results are compared to those of the flow calculations with constant blowing. It is observed that pulsed blowing with a small momentum coefficient leads to a strong increase in the lift coefficient compared to constant blowing. The resulting lift increment depends on the dimensionless frequency selected.

Item URL in elib:https://elib.dlr.de/105569/
Document Type:Contribution to a Collection
Title:Numerical Investigation of Unsteady Tangential Blowing at the Rudder of a Vertical Tailplane Airfoil
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kröhnert, Annaanna.kroehnert (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics X
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:132
DOI :10.1007/978-3-319-27279-5_4
Page Range:pp. 39-49
Editors:
EditorsEmail
Dillmann, AndreasDLR Göttingen
Heller, GerdAirbus Bremen
Krämer, EwaldUni Stuttgart
Wagner, ClausDLR Göttingen
Breitsamter, ChristianTU München
Publisher:Springer Verlag
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-319-27278-8
Status:Published
Keywords:Vertical Tailplane, Active Flow Control, AFC, tangential blowing, CFD, RANS, TAU
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: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Seyfried, Beate
Deposited On:10 Aug 2016 11:53
Last Modified:10 Aug 2016 11:53

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