【摘要】 采用示踪实验研究紫外线消毒器的水力特性。结果表明,进出口方向和相对位置对反应器的水力特性没有显著影响,随着雷诺数的增大,反应器的水力特性参数逐渐接近于推流条件。同时利用计算流体力学(CFD)技术模拟紫外线消毒器的流场,计算水流的累积停留时间分布F(t)并与示踪试验的结果相比较,发现CFD模拟能够较好地反映紫外线消毒器的水力条件,二者F(t)的差别主要是由于示踪试验中的实际条件偏离理想条件所致;随着雷诺数的增加,反应器内各部分水流F(t)的差别逐渐缩小。更多还原

【Abstract】 Hydraulic characteristics of the UV disinfector was investigated by tracer experiment.The results showed that there was little effect on hydraulic characteristics of UV disinfector in in-outlet direction and relative position;and hydraulic parameters were gradually close to these under plug-flow condition with Re number increasing.The flow field was simulated by computational fluid dynamics,and distribution of cumulative residence time calculated conformed to that by tracer experiment well.The difference between calculated value and experimental data decreased with Re numberr increasing.更多还原