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Numerical Investigation of Unsteady Blowing Through Discrete Slots on a Swept Vertical Tail of Infinite Span

Gebhardt, Anna (2017) Numerical Investigation of Unsteady Blowing Through Discrete Slots on a Swept Vertical Tail of Infinite Span. AIAA Aviation and Aeronautics Forum and Exposition (AVIATION), 5.-9. Jun. 2017, Denver, CO, USA.

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Abstract

Active flow control over the rudder shoulder of a vertical tail plane is applied to increase its side force coefficient. The rudder of the infinite span model is deflected. This leads without actuation to separated flow over the rudder. Several investigation are conducted. First a full-span constant blowing slot is used. With sufficient high jet velocity the flow on the rudder can be attached. By using in a next step several discrete slots, the required mass flow rate can be reduced for a similar increase in the side force coefficient. Using then pulsed blowing from the discrete slots is advantageous since the mass flow rate can be reduced. However, this is only true for quite small momentum coefficients. For cases with high side force coefficients requirements only the constant blowing approach is capable to achieve them, albeit at the correspondingly large mass flow rates and momentum coefficients.

Item URL in elib:https://elib.dlr.de/115716/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical Investigation of Unsteady Blowing Through Discrete Slots on a Swept Vertical Tail of Infinite Span
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gebhardt, Annaanna.gebhardt (at) dlr.deUNSPECIFIED
Date:2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Vertical Tailplane, VTP, Active Flow Control, AFC, tangential blowing, pulsed blowing, CFD, RANS, URANS, TAU
Event Title:AIAA Aviation and Aeronautics Forum and Exposition (AVIATION)
Event Location:Denver, CO, USA
Event Type:international Conference
Event Dates:5.-9. Jun. 2017
Organizer:AIAA
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 for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Kröhnert, Anna
Deposited On:05 Dec 2017 10:51
Last Modified:05 Dec 2017 10:51

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