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2001•Proceedings of the Institution of Civil Engineers - Maritime EngineeringRequires access

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

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

Open publisher page 5 citations

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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What this paper is about

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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Available 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.

Key concepts: Tailwater, Culvert, Geotechnical engineering, Scale model, Scale (ratio), Geology, Reliability (semiconductor), Work (physics)

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