Shock Wave Boundary Layer Interaction Control using Repetitive-Pulse Laser Energy Depositions

摘要

Repetitive pulse laser energy deposition can modulate the shock wave oscillation frequency, which caused by shock wave and boundary layer interactions. Without energy deposition, the shock oscillation frequency is lower than 10 kHz. This frequency can be modulated to the repetition frequency of energy deposition. However, the oscillation frequency does not correspond to the energy deposition frequency when the frequency of the repetitive energy deposition become high enough to interact successive vortex rings. At 40 kHz energy deposition, the shock oscillation frequency is lower than 10 kHz, and the strong peak is observed at 1 kHz.