Comparison of two different UV disinfection models by CFD
基于CFD的两种紫外消毒模型的比较研究

To predict the efficiency of UV disinfection reactor and improve the accuracy of numerical simulation,two different UV intensity models were compared.Intensity fields and disinfection efficiencies were simulated using line model and cylinder model.The results showed that compared with the cylinder model,line model gave 42.3% higher UV intensity near the UV lamp.Two models had similar results beyond 1.2 cm away from the lamp.Compared to the reduction equivalent dose(RED) from bioassay,the line model had higher RED values while the cylinder model had lower ones at 95% transmission rate,and both models had higher RED values at 80% transmission rate.Transmission rate was the main factor of RED in low transmission rate.Cylinder model is suitable for developing numerical simulation of the UV disinfection in annular reactors.