Numerical Investigation of Unsteady Blowing Through Discrete Slots on a Swept Vertical Tail of Infinite Span
| Autor: | Anna Gebhardt |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
pulsed blowing
RANS Mass flow Flow (psychology) 02 engineering and technology Span (engineering) VTP 01 natural sciences 010305 fluids & plasmas Momentum tangential blowing 0203 mechanical engineering Active Flow Control 0103 physical sciences Mass flow rate Physics 020301 aerospace & aeronautics URANS Plane (geometry) Rudder Mechanics Vertical Tailplane AFC TAU CFD Constant (mathematics) |
| Zdroj: | 35th AIAA Applied Aerodynamics Conference. |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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