Evolution of vortical structure over delta- wing with transient along-core blowing

摘要

Over delta-wing with a 75-deg sweep angle and 40-deg of the angle of attack, the vortex core subject to transient along-core blowing is investigated experimentally. In response to the transient along-core blowing, the vortex core, before breakdown, serves s a transmitting vessel that steadily delivers the supplied momentum to overcome the strong adverse along-core pressure gradient, especially near the onset location of the vortex breakdown.