Simulation and analysis of influence of drag reducer on flow field characteristics of porous rotary nozzle

RNG k-ε turbulence model and finite volume method are used for porous rotating jet to analyze the continuous phase with DR-12 emulsion polymer drag reducer. Numerical simulation of mixed media is carried out to analyze the influence of the resistance reducer on the flow field characteristics of the nozzle, and the changes of the jet shape, pressure field and velocity field of each nozzle of the nozzle are obtained. The results show that it is found that the addition of drag reducers can effectively increase the jet density, the effective spray distance and the internal static pressure of the nozzle, while the dynamic pressure and jet velocity are limited; when the inlet pressure is 50 MPa, the static pressure of the nozzle has increased by 2.67 to 5.36 times, while the dynamic pressure and jet velocity have only increased by 1.04 to 1.06 times and 1.02 to 104 times; with the change of inlet pressure, the average static pressure of each nozzle of the nozzle has increased by 3.25 to 3.76 times, and the resistance reduction effect is more obvious, and it is verified that adding a resistance reducing agent can effectively reduce the pressure loss of the porous rotating nozzle.