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Numerical Solutions...
Numerical Solutions for the Cawapi Configuration on Unstructured Grids at KTH/FOI, Sweden : Part I
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- Görtz, Stefan (författare)
- KTH,Farkost och flyg
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- Jirásek, Adam (författare)
- FOI
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: Understanding and Modeling Vortical Flows to Improve the Technology Readiness Level for Military Aircraft.
- Relaterad länk:
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http://ftp.rta.nato....
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Steady and unsteady viscous simulations of a full-scale, semi-span and full-span model of the F-16XL-1 aircraft at seven different flight Reynolds/Mach number combinations have been performed with an unstructured CFD code. The steady-state simulations are with several turbulence models of different complexity. Detached-Eddy Simulation (DES) has been used to compute the unsteady flow. The computed results are compared with public domain flight-test data. Very good agreement is demonstrated for surface pressure distribution, local skin friction and boundary velocity profiles. The different turbulence models performed almost equally well, except the Spalart-Allmaras model, which failed to predict the flow qualitatively and quantitatively. The Differential Reynolds Stress Model (DRSM) outperformed all other models when it comes to local span-wise skin friction. DES was superior over RANS modeling at the highest angle of attack, where the flow over the outer wing is separated and partly unsteady.
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
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