Stormwater management is a critical aspect of urban infrastructure, with an increasing need to understand and improve the performance of stormwater systems under dynamic loading conditions. This study focuses on the application of Particle Image Velocimetry (PIV) as a powerful tool for quantifying flow turbulence within stormwater infrastructure subjected to unsteady loading conditions. Unsteady loading, such as rainfall events, presents a unique challenge for stormwater systems, as flow turbulence can significantly affect their efficiency and overall performance. The objective of this research is to investigate and quantify flow turbulence within stormwater infrastructure, exemplified by hydrodynamics separator, under varying unsteady loading conditions. PIV, a non-intrusive optical measurement technique, is employed to capture velocity fields with high spatial and temporal resolution. The analysis focuses on characterizing turbulent flow patterns, intensity, and spatial distribution, providing valuable insights into the dynamic behavior of stormwater systems. The results of this investigation aim to enhance our understanding of the hydraulic performance of stormwater systems and contribute to the development of more efficient and resilient stormwater management strategies.
