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TsAGI Science Journal

ISSN Print: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2017019299
pages 483-494

NUMERICAL SIMULATION OF A JET FLAP

Myo Thein
Moscow Institute of Physics and Technology, 9, Institutskiy Per., Dolgoprudny, Moscow Region, 141700, Russia
Ludmila Nikolaevna Teperina
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky str. 1, Zhukovsky, 140180, Russia

ABSTRACT

The methodologies of jet flap computation are considered, which are based on solving the integral–differential equations, the discrete vortex method, and the method of solving the Navier−Stokes equations. The computational results of the jet flap effect on the airfoil lift coefficient, which were obtained using different methodologies, are compared with each other and with the experimental data. An analogy between jet and conventional flaps is established. The conventional flap chord is proportional to the specific impulse of the jet flap. Additionally, the problem of a screen effect on the lift of a jet-flapped airfoil is considered.