Abstract：Based on numerical simulation and experiment, the internal structure of fan filter unit was optimized. The distribution of internal flow field was obtained by CFX. The error is admitted through comparing the results of experiment and simulation at the same points, which proves the reliability of simulation results. To ensure energy savings and uniformity of air supply, a series of optimization measures were proposed. The sudden expansion region of flow channel was modified to make the internal vortices disappear and reduce the resistance of fan filter unit. The deflector was redesigned to solve the problem of nonuniform velocity, and the actual product was tested on the test bench. The results show that after modification, the velocity distribution becomes more uniform with higher static pressure and aerodynamic efficiency.
2014, Vol. 35 
