Numerical Simulation of the Turbulence Flow in Four Nozzles Opposed Impinging Stream Reactor

In order to discuss the turbulence properties of the flow field in the multiple impinging stream reactor，the flow field of four nozzles opposed impinging stream reactor is simulated using Fluent software. Numerical simulations are performed in 3D chamber, by which the k-ε RNG model is used as turbulence model. The distributions of turbulence parameters (turbulence intensity, turbulence kinetic energy) are studied under different operational conditions with variable the nozzle diameter, nozzle-to-nozzle distances and inlet flow rate. It shows that turbulence intensity and turbulence kinetic energy of the impingement region increase more significantly than that of region without impact, and the optimal conditions of microcosmic mixture are achieved. The distributions of turbulence kinetic energy are approximate to that of the turbulence intensity on the axial direction of the nozzles. The result is nearly consistent with the experimental data.