88 / 2019-10-07 09:59:36

Direct Numerical Simulation of Hypersonic blunt cones

Direct numerical simulation, hypersonic transition, blunt cone

Direct numerical simulation of hypersonic transition flow over blunt cones with 7-degree cone angle are performed. The free stream Mach number is 6 and the angle-of-attacks are 0 degree and 6 degree. The effects of leading bluntness on the transition are studied, and the results shows that The transition locations moves downstream monotonically as the increasing of the leading bluntness, and the transition reversal phenomena is not occurred. The cross-stream instabilities are also studied by DNS of blunt cones with 6-degree angle of attack, and the coherent structures of cross-stream transitions are also given.