Numerical Simulation of the Flow Field of the Circumferential Multi Nozzle Radial Compressed Air Mist Gun

摘要

In recent years, the fog gun trucks for outdoor dust removal have been widely used and developed in China. In this paper, the spray flow field simulation of FLUENT is carried out for the spray nozzle's mass flow rate and the structure of air supply with circle radius decreasing. The analysis shows that the decreasing degree of the reducing air supply outlet produces the corresponding shear flow, which makes the air supply outlet of the fog gun obtain more energy distribution in the position of the nozzle, and it is more conducive to the divergence and uniformity of the fog droplets by sending the air generated by the nozzle to a longer distance. With the increase of nozzle mass flow rate and wind speed flow rate, it is more conducive to the air supply and divergence of droplets. The effect of adding nozzle around the ejector is better than that in the center of the ejector. A design of flat ejector with higher efficiency is proposed.