Investigating the celerity of propagation for small perturbations and dispersive sediment aggradation under a supercritical flow

Eslami, Hasan; Poursoleymanzadeh, Erfan; Hiteh, Mojtaba; Tavakoli, Keivan; Yavari Nia, Melika; Zadehali, Ehsan; Zarrabi, Reihaneh; Radice, Alessio

doi:https://doi.org/10.5194/esurf-13-437-2025

Articles | Volume 13, issue 3

https://doi.org/10.5194/esurf-13-437-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/esurf-13-437-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 3

Research article

|

06 Jun 2025

Research article |

| 06 Jun 2025

Investigating the celerity of propagation for small perturbations and dispersive sediment aggradation under a supercritical flow

Hasan Eslami, Erfan Poursoleymanzadeh, Mojtaba Hiteh, Keivan Tavakoli, Melika Yavari Nia, Ehsan Zadehali, Reihaneh Zarrabi, and Alessio Radice

Supplement

https://doi.org/10.5194/esurf-13-437-2025-supplement

Data sets

Raw data for the present experiment Hasan Eslami et al. https://doi.org/10.5281/zenodo.10641001

Data for aggradation experiments performed at the Mountain Hydraulics Laboratory of the Politecnico di Milano Hasan Eslami and Alessio Radice https://doi.org/10.5281/zenodo.14883164

Short summary

A channel may be aggraded by overloaded sediment. In this study we realize an aggradation experiment and determine the celerity at which an aggradation wave, due to sediment overloading, migrates. We also investigate the celerity of small perturbations, as quantified by mathematical formulations. The celerities of the two kinds are correlated with each other. However, the celerity of small perturbations is larger than the other one, which is less than a few percent of the water velocity.