Formation Mechanism of Stable Swirling Flow Accompanied with Air-Core in Discharging Liquid through a Nozzle Settled at the Bottom of Container

抄録

The formation condition of swirling flow accompanied with air-core in discharging liquid in a reactor vessel from a nozzle was investigated through water-model experiments. The occurrence height position of air-core against the initial angular velocity of swirling water was calculated in both cases of centric and eccentric nozzle position, and the result was compared with the respective experimental ones. The same tendency was found between the calculated and the experimental results, and both results were in reasonable agreement. It is found that the larger the initial angular velocity of swirling water, the higher the water level at which air-core arises.