Numerical Simulation Using Slats, Slots, and Flaps in Steady Flight Conditions

Abstract

At this time, it has become commonplace for aircraft to use high lift devices. The high lift devices used include flaps, slats, slots, elevators, ailerons, and others. This study examines the effect of multiple elements on the wing, especially the combination of slat slots and flaps in several configurations.. This research was conducted with numerical simulations on wing airfoil NACA 43018. The observed conditions were rectangular wing (no slats, slots, and flaps) compared to the use of slats, slots, and flaps under steady flight conditions. The angles of attack used are (α) = 0o, 2o, 4o, 6o, 8o, 10o,12o,15o, 16o,17o,19o, and 20o. Numerical simulation using Ansys 19.1 application with turbulent model k-ε realizable. The use of slats, slots, and flaps does not result in a shift in the stall point but tends to increase aerodynamic performance (CL/CD)which is very significant. By paying attention to pressure drag, viscous drag and the resulting induced drag, the use of slats, slots, and flaps reduces a large amount of induced drag so that the lift to drag ratio increases.