Conference Agenda

Gully pots serve as an active separation system designed to capture particles carried by stormwater runoff. Gully pots are crucial in preventing blockages downstream in the drainage pipe systems and for mitigating flooding. With increasing emphasis on sustainable stormwater management, gully pots are also being utilised to reduce pollutant loads into aquatic environments. Despite their widespread use in urban drainage systems, a noticeable gap exists in understanding the efficiency of gully pots. In this research, a full-scale (1:1) gully pot was constructed to examine the flow field within gully pots. This full-scale pilot was used to evaluate the effects of flow rate and grate direction on the hydrodynamic conditions in the gully pot. When the grate was parallel to the flow direction, the jet penetration length was greater, and the flow field exhibited asymmetry. In contrast, in the perpendicular grate configuration, the jet penetrated centrally through the middle of the sump. The results demonstrated the impact of flow rate and grate direction on water flow behaviour, which can also influence the separation efficiency of the gully pot. The experimental results obtained using this full-scale pilot of a gully pot provide a validation benchmark for further numerical investigations on gully pots.