Author(s): Javier Burguete; Javier Fernandez-Pato; Borja Latorre; Eva T.medina; Piluca Paniagua; Enrique Playan; Nery Zapata

Linked Author(s): Javier Fernández-pato

Keywords: Irrigation networks; Transport models; Zebra mussel

Abstract: Zebra mussel infestation poses a major threat to pressurized irrigation systems. While chemical treatments effectively control adult populations, the subsequent transport and accumulation of detached shells can cause severe clogging at filters and hydrants. This study combines controlled experiments in a horizontal transparent pipeline with a one-dimensional advection-dispersion model to characterize shell transport dynamics. Shell motion was recorded using high-speed cameras at flow velocities ranging from 0.5 to 1.8 m s⁻¹. Results confirm a critical velocity threshold near 0.5 m s⁻¹ for sustained transport. Below this value, shells remain stationary on the pipe invert. Above it, transport is predominantly concentrated within 2 cm of the bottom, although higher velocities increasingly mobilize shells to greater elevations. The model accurately reproduces arrival times and concentration evolution at downstream sections. These findings provide a practical framework for identifying clogging-prone zones and optimizing maintenance strategies in irrigation networks affected by zebra mussel biofouling.

DOI: https://doi.org/10.64697/iahr.proc.hic2026.85

Year: 2026