Numerical Simulation of Hydrodynamic Mixing in Narrow Rectangular Multi-Channel

With the help of the Computational Fluid Dynamics code,hydrodynamic mixing in the narrow rectangular multichannel is numerical simulated.The results show that the water flow rate in two side channels is lower than that in the mean main channel after passing through the whole axial mixing sections.Under the different ratios of the water flow rate at the inlet,the water flow rate in the mean main channels is consistent after passing through the whole axial mixing sections.Hydrodynamic mixing in former 4 mixing sections is obvious,and hydrodynamic mixing decreases with the increasing of the number of the axial mixing section.During the process of the mixing,the part of water in the mean main channel of the high flow rate at the inlet enters into the channel of the lower flow rate,and the secondary flow forms in the mixing section,but the secondary flow decreases with the increasing of the number of the axial mixing section.