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. doi: 10.1007/978-3-319-27279-5_4. ISBN 978-3-319-27278-8. ISSN 1612-2909.
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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/ | ||||||||||||||||||
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Document Type: | Contribution to a Collection | ||||||||||||||||||
Title: | Numerical Investigation of Unsteady Tangential Blowing at the Rudder of a Vertical Tailplane Airfoil | ||||||||||||||||||
Authors: |
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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: |
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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 (old) | ||||||||||||||||||
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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