Author(s): Mohammadmahdi Noroozi; Ekaterina Sokolova; Ann-margret Stromvall; Mia Bondelind
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Abstract: Understanding the interaction between hydrodynamics and particle capture is essential for improving gully pot performance in urban drainage systems. This abstract presents the experimental components of a broader PhD project which consists of two complementary parts: (1) hydrodynamic characterization, and (2) solid separation efficiency analysis. In the first part, hydrodynamic analyses in the gully pot revealed two key flow regions: a bubble-dominated region near the surface created by the plunging inlet jet, and a lower region where a rotational vortex occupied the sump. In the second part, the solid separation efficiency of the gully pot was evaluated. Controlled laboratory experiments with sand particles were conducted for flow rates ranging between 0.5 to 4 L s⁻¹. These complementary experimental parts aim to establish benchmark data linking hydraulic parameters with separation efficiency, providing guidance for improved gully-pot design and maintenance strategies under current and future climate conditions.
Year: 2026