Self-sustained Oscillations And Bifurcations Of Transonic Flow Past Simple Airfoils

摘要

A turbulent flow past two symmetric airfoils, whose bow and aft portions are circular arcs, whereas midparts are flat, is studies numerically. The amplitude of lift coefficient oscillations versus the free-stream Mach number M_∞ is analyzed at zero angle of attack. Ranges of M_∞ in which there exist flow bifurcations are determined.