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Accession Number N14-0003968
Title Analysis of Low-Speed Stall Aerodynamics of a Swept Wing with Laminar-Flow Glove.
Publication Date Jan 2014
Media Count 18p
Personal Author T. T. Bui
Abstract Reynolds-Averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) analysis was conducted to study the low-speed stall aerodynamics of a GIII aircraft's swept wing modified with a laminar-flow wing glove. The stall aerodynamics of the gloved wing were analyzed and compared with the unmodified wing for the flight speed of 120 knots and altitude of 2300 ft above mean sea level (MSL). The Star-CCM+ polyhedral unstructured CFD code was first validated for wing stall predictions using the wing-body geometry from the First American Institute of Aeronautics and Astronautics (AIAA) CFD High-Lift Prediction Workshop. It was found that the Star-CCM+ CFD code can produce results that are within the scattering of other CFD codes considered at the workshop. In particular, the Star-CCM+ CFD code was able to predict wing stall for the AIAA wing-body geometry to within 1 degree of angle of attack as compared to benchmark wind-tunnel test data. Current results show that the addition of the laminar-flow wing glove causes the gloved wing to stall much earlier than the unmodified wing. Furthermore, the gloved wing has a different stall characteristic than the clean wing, with no sharp lift drop-off at stall for the gloved wing.
Keywords Aerodynamic coefficients
Aerodynamic stalling
Angle of attack
Applications programs(Computers)
Computational fluid dynamics
Flight optimization
Flight safety
Laminar flow
Low speed
Navier-stokes equation
Reynolds averaging
Simulation
Subsonic speed
Swept wings
Vortex generators


 
Source Agency National Aeronautics and Space Administration
NTIS Subject Category 51A - Aerodynamics
51C - Aircraft
51F - Test Facilities & Equipment
Corporate Author National Aeronautics and Space Administration, Edwards, CA. Hugh L. Dryden Flight Research Center.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1421
Contract Number N/A

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