Investigation of uniform and graded sediment wash-off in an urban drainage system: numerical model validation from a rainfall simulator in an experimental facility
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Investigation of uniform and graded sediment wash-off in an urban drainage system: numerical model validation from a rainfall simulator in an experimental facilityAutor(es)
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2024Cita bibliográfica
Addison-Atkinson, W.; Chen, A.S.; Memon, F.A., Anta, Jose, Naves, J.; Cea, L. (2024) Investigation of uniform and graded sediment wash-off in an urban drainage system: Numerical model validation from a rainfall simulator in an experimental facility. Journal of Hydrology, v.629, 130561. https://doi.org/10.1016/j.jhydrol.2023.130561
Resumo
[Abstract:] Understanding sediment wash-off in urban environments plays an essential role in sediment transport management; and is critical for accurate pluvial flood control to assist in adaptation and mitigation strategies. Sediment transport models have been researched previously, though challenges still arise due to the complicated nature of graded sediment transport. This study tested the accuracy of the van Rijn model using a sparse distribution of particle sizes using the geometric mean. As such, this study used high-resolution datasets collected in a water laboratory to investigate sediment wash-off and transport on an urban street. This included the interaction of two gully pots receiving sediment loads that were washed off from a hypothetical urban surface by three rainfall intensities. The results showed that the model was able to simulate uniform sediments entering the gully pots accurately when the sediment size was assigned to a median diameter. Using the grain diameter to represent the geometric mean can improve the model performance for simulating a graded sediment.
Palabras chave
Sediment transport
Sediment wash-off
Rainfall intensities
Van Rijn model
Sediment wash-off
Rainfall intensities
Van Rijn model
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Atribución 3.0 España