Self-oscillating flow field inside the nozzle chamber variation, internal and external flow field dynamic pressure variation

Abrasive jet formation mechanism of the pulse, the pulse characteristics and pulsed abrasive water jet abrasive jet perforating stimulation mechanism and other issues have been studied, and in the Sichuan Basin, a gas well site experiments. The main  polycrystalline diamond : first using a large eddy simulation, through in-depth analysis of the self-oscillating flow field inside the nozzle chamber variation, internal and  synthetic diamond  field dynamic pressure variation, variation of the velocity vector, turbulence intensity distribution, revealing the self-oscillating  abrasive wheels  jet generation mechanism; combined oscillation, bubble collapse on the abrasive jet impact and solid abrasive water jet in the pulse distribution of abrasive water jet pulses revealed the formation mechanism.