A computational method has been developed for computing transonic flows about an aft-fuselage mounted capped-nacelle/pylon configuration with/without propeller power. A hybrid conformal-mapping/transfinite-interpolation scheme is developed for generating body conforming grid systems; a multigrid line-relaxation scheme is developed for solving the potential flowfield; an Euler correction method based on the Clebsch transformation is developed to simulate the power effect; and an inverse boundary-layer method is applied interactively on both the pylon and fuselage surfaces to include the viscous effects. Included are comparisons of the solutions with available test data, and the solutions of panel method. The importance of the fuselage boundary-layer effect on the pylon pressure distribution is especially addressed. The present method is shown to be reliable, efficient and general, and can be applied to compute a wide range of flow conditions, including those of high angles of attack.
A transonic computational method for an AFT-mounted nacelle/pylon configuration with propeller power effect
Methode zur Berechnung von Ueberschallstroemungen an einem Aufbau aus Flugzeugrumpf mit Spannturm und Propellerantriebeffekt
AIAA-Papers ; Jan ; 1-11
1988
11 Seiten, 18 Bilder, 10 Quellen
Conference paper
English
Transonic numerical simulation for wing-body-pylon-nacelle configuration
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