Research on High Vacuum Phenomenon Produced by Aquatic Vortex

We designed a kind of swirler to produce strong vortex which was inspired by tornado . Focusing on the velocity and pressure distribution of inlet flow within the swirler, we also conducted a series of numerical simulations on the swirler when we set geometric inlet conditions at the bottom ,middle and top of the swirler. The simulation results showed :1 When the geometric inlet condition was set in the middle of the swirler, it would produce the strongest magnitude of vorticity and the highest vacuum degree in the center of vortex compared with other two places.2When we set the geometric inlet condition at the middle of the swirler, it would create reversed swirl flow. We discovered that such kind of reversed swirl flow would enhance the magnitude of main swirl flow vorticity.