%A LIU Wenjun, DU Zhipeng, JIN Junwei %T Optimizing the configuration of a clearwell by integrating pilot and full-scale tracer testing %0 Journal Article %D 2007 %J Front. Environ. Sci. Eng. %J Frontiers of Environmental Science & Engineering %@ 2095-2201 %R 10.1007/s11783-007-0045-x %P 270-275 %V 1 %N 3 %U {https://journal.hep.com.cn/fese/EN/10.1007/s11783-007-0045-x %8 2007-09-05 %X In this paper, the main factors impacting the plug flow pattern of a clearwell were investigated by integrating pilot-scale, full-scale clearwell tracer testing and computational fluid dynamics (CFD) simulation. It was found that pilot tracer testing, full-scale tracer testing and CFD simulation all demonstrated that the correlation between the ratio of t10/T and L/W can be approximately expressed by: t10/T = 0.189 4ln(L/W)-0.049 4. This study confirmed that the installation of baffles within clearwells is an efficient way to optimize their configuration. In addition, the inlet velocity has a minimal contribution to the ratio of t10/T. However, the ratio of turning channel width to channel width (d/W) significantly contributes to the ratio oft10/T. The optimal ratio of d/W is 0.8–1.2 for maintaining better plug flow pattern. The number of turning channels is one of the main factors that impact the ratio of t10/T. When increasing the number of turning channels, a lower ratio of t10/T is obtained.