A hydrodynamic model of membrane assembly strengthened by rotating flow is proposed and optimized. The Box-Behnken method is used for multi-parameters experimental design with parameters of inlet diameter

inlet length

shell tube height

inlet/outlet and tube height

inlet-outlet tube horizontal inclined angle θ

inlet-outlet and ring protuberance radian

the membrane module design schematic is obtained by optimized response variants. By coupling the Reynolds stress turbulence model (RSM) with the discrete phase model based on the Euler-Lagrangian discrete phase model (DPM)

the residence time distribution and the fluid mechanical properties of the liquid-solid two-phase flow in the three-dimensional model were simulated. The simulation results show that the shell-side velocity distribution of the optimized membrane module is more uniform

the turbulent flow dissipation rate is lower

and the shear stress distribution and vorticity distribution are different from the traditional membrane modules. The experimental results confirm that the optimized membrane module has higher water yield

lower pressure drop and lower membrane fouling rate.