High-lift behaviour of half-models at flight reynolds numbers

• Autorzy: Szulc O. , Doerffer P.
• Języki publikacji: EN

Abstrakty

EN

A peniche is designed to offset a half-span aircraft model from the wind tunnel wall boundary layer. This strategy of model mounting results in large influence on the meas-ured aerodynamic coefficients, compared with full-span data, The negative influence is especially important in high-lift conditions leading to incorrect maximum lift behaviour, A very time-consuming set of python scripts was constructed to allow automatic meshing of the wing-body configuration of the DLR F11 high-lift model placed in the European Transonic Wind tunnel (ETW, Germany). Variations due to different concepts of model mountings (peniches) were included. A block-structured FLOWer solver (DLR, Germany) was used for all flow simulations, simplifying the mesh generation process by using the chimera overlapping grids technique, Preliminary results are available for a full-span configuration obtained with a symmetry condition at the mirror plane. Computations of the half-span model placed directly at the wall or mounted using a standard peniche are also presented.

Słowa kluczowe

EN

half-span; wing-body; high-lift; peniche; Navier-Stokes

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2006
• Tom: Vol. 10, No 2
• Strony: 191--206
• Opis fizyczny: Bibliogr. 5 poz., 19 rys., 8 tab.

Twórcy

autor

Szulc O.

autor

Doerffer P.

• Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952 Gdansk, Poland,

Bibliografia

• [1] Milholen W E and Chokani N 1996 Computational Analysis of Semi-span Model Test Techniques, NASA Contractor Report 4709
• [2] Gatlin G M and McGhee R J 1996 Study of Semi-span Model Test Techniques, AIAA 96-2386
• [3] Milholen W E and Chokani N 1996 Development of Semi-span Model Test Techniques, AIAA 96-2412
• [4] Gatlin G M, Parker P A and Owens L R Jr 2001 Development of a Semi-span Test Capability at National Transonic Facility, AIAA 2001-0759
• [5] Gross N and Quest J 2004 The ETW Wall Interference Assessment for Full and Half Models, AIAA 2004-0769