EVALUATION OF COMBINE SEWER OVERFLOW USING MATHEMATICAL AND PHYSICAL MODELING

摘要

The authors deal with an evaluation of new prefabricated CSO (Combined Sewer Overflows) unit made of fibreglass tubes in the presented study. Based on the methods of hydraulic and mathematical modelling, the unit geometry was evaluated. Particularly, the flow patterns in the axes of plane symmetry of CSO were measured on the hydraulic model using Ultrasonic Velocity Profiler (UVP). The mathematic k-ε model was used for 3-D simulation of turbulent flow and suspended solids transport. The results show great potential of the ultrasonic Doppler anemometry in combination with numerical data analysis to visualize 2D flow field. Finally, the optimal geometrical configurations with respect to the gravitational separation of suspended solids content and separation of floatable solids as well were found.