Effect of airfoil thickness on cargo carrying capacity for high speed ship with aerodynamic unloading
In the past few years, high-speed aerodynamic unloading vessels have attracted interest in both civilian and naval transport. There have been many studies of airfoils near the interface. But there has been little research on wing loading for this type of vessel. In this study, the effect of the profile thickness on the carrying capacity of a high-speed vehicle with aerodynamic unloading was numerically estimated. To study the effect of the thickness of the airfoil in the range from 10% to 60% of the chord, calculations were carried out on a moving screen at angles of attack from 0 ° to 8 ° and (h / c = 0.1). All airfoils had a chord of 1 m. The airfoils were modified to have a flat bottom surface to avoid suction at low angles of attack with a small distance from the interface. As this is an undesirable phenomenon. The k-ω SST turbulence model was used to simulate the flow around the wing at Reynolds numbers (Re = 1 х 106). To check the calculation results, the CFD results of the NACA 4412 profile when moving above the ground were compared with the experimental data. This article shows what type of airfoil thickness should be used to obtain the effective carrying capacity of a high-speed aerodynamic craft in its design.