Effect of tailwater depth and model scale on scour at culvert outlets

R. Day; S.L. Liriano; W.R. White

doi:10.1680/wame.2001.148.3.189

Effect of tailwater depth and model scale on scour at culvert outlets

R. Day, S.L. Liriano, W.R. White

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Abstract

The results from an experimental programme investigating the effect of tailwater depth and model scale on scour depths downstream of culverts are shown. Results are presented for cohesionless uniform sands and gravels. A model for predicting equilibrium scour depth and incorporating a correction function to take account of tailwater depth is shown to provide good agreement with previously published work. It is shown that the model scale does have an impact on the reliability with which scour hole data can be presented, in particular those experiments in which Reynolds number falls below 4 × 103.

Original language	English
Pages (from-to)	189-198
Journal	Proceedings of the Institution of Civil Engineers: Water and Maritime Engineering
Volume	148
Issue number	3
DOIs	https://doi.org/10.1680/wame.2001.148.3.189
Publication status	Published - Sept 2001

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10.1680/wame.2001.148.3.189

Cite this

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abstract = "The results from an experimental programme investigating the effect of tailwater depth and model scale on scour depths downstream of culverts are shown. Results are presented for cohesionless uniform sands and gravels. A model for predicting equilibrium scour depth and incorporating a correction function to take account of tailwater depth is shown to provide good agreement with previously published work. It is shown that the model scale does have an impact on the reliability with which scour hole data can be presented, in particular those experiments in which Reynolds number falls below 4 × 103.",

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N2 - The results from an experimental programme investigating the effect of tailwater depth and model scale on scour depths downstream of culverts are shown. Results are presented for cohesionless uniform sands and gravels. A model for predicting equilibrium scour depth and incorporating a correction function to take account of tailwater depth is shown to provide good agreement with previously published work. It is shown that the model scale does have an impact on the reliability with which scour hole data can be presented, in particular those experiments in which Reynolds number falls below 4 × 103.

AB - The results from an experimental programme investigating the effect of tailwater depth and model scale on scour depths downstream of culverts are shown. Results are presented for cohesionless uniform sands and gravels. A model for predicting equilibrium scour depth and incorporating a correction function to take account of tailwater depth is shown to provide good agreement with previously published work. It is shown that the model scale does have an impact on the reliability with which scour hole data can be presented, in particular those experiments in which Reynolds number falls below 4 × 103.

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DO - 10.1680/wame.2001.148.3.189

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JO - Proceedings of the Institution of Civil Engineers: Water and Maritime Engineering

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