Factors in fluencing accurate shock vortex interaction prediction on F-16XL aircraft

• Computational Fluid Dynamics methods continues to play an increasingly important role in design and validation. Some examples are conditions that can not be tested prior to flight test. In order to rely on these methods it is essential that these methods are validated and evaluated to state-of-the-art wind tunnel test and/or in-flight data. In a previous project \Cranked-Arrow Wing Aerodynamics Project International" (CAWAPI)it was clear that all CFD methods failed to some degree in the transonic regime where shock vortex interaction phenomena was present. Detailed analysis of surface pressure distribution showed that CFD where not able replicate the correct flow field and produce acceptable results.This paper aim to map out the flight conditions for which CFD is likely to fail, and try to answer or shed light in the question why? This with the main focus on the factors that influence shock vortex interaction in the flow field.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)

Nyckelord

Aviation

Computational fluid dynamics

Delta wing aircraft

Flow fields

Research aircraft

Vortex flow

Wind tunnels

Computational fluid dynamics methods

Cranked-arrow wing

Flight conditions

Shock-vortex interaction

State of the art

Surface pressure distribution

Transonic regime

Wind tunnel tests

Supersonic aircraft

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