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Title
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يك مطالعه ديناميك سيالات محاسباتي روي خصوصيات آيروديناميكي بال مياني از يك قايق پرنده دو بدنه درنزديك سطح زمين
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Type
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Presentation
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Keywords
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NACA 6409, CFD analysis, Wing In Ground effect, Lift to drag ratio.
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Abstract
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In this paper the influence of ground effect on the aerodynamic character of NACA 6409 were numerically studied. The
simulations of the wing were performed by three dimensional Computational Fluid Dynamic (CFD). The important aerodynamic
characters such as lift and drag coefficient, lift to drag ratio were determined with variation in some principle aerodynamic
parameter, for instance the angle of attack and aspect ratio. The ground clearance ( h/c ) in CFD simulation was 0.1 . This
simulation showed that there was enhancement on lift coefficient and reduction on drag coefficient related to incremental of
aspect ratio when a aircraft flying in proximity to the ground. The K-? turbulent model was used in CFD model. Numerical
results were compared with experimental data of another researcher. As a application of this CFD simulation was calculating the
lift-drag coefficient and lift to drag ratio from middle wing of WIG Catamaran.
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Researchers
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Saeed Jaamei (Third researcher) ,
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