Numerical prediction of shock wave and boundary layer control effects on airfoils at transonic speed

摘要

The present paper describes the main issues of the numerical investigation of concepts for the active control of shock waves and of the boundary layer on transonic airfoils, carried out in the frame of the task 2 of the EUROSHOCK II project. A comprehensive discussion of the effectiveness of the bump, the passive and active ventilation through a porous sheet and the suction slot concepts, is given on the basis of numerical calculations, performed by CIRA, ONERA, DLR, INTA, DASA, Ale-nia and the University of Naples as partners of the task 2, on laminar airfoil sections also investigated in wind tunnel tests.