# Numerical Modelling of the River Bandon

2012

Master Thesis

## Degree Name

Master of Engineering (Research)

## Department

Civil, Structural & Environmental Engineering

Dr. Joe Harrington

## Abstract

Numerical modelling involves the use of data from the physical environment and mathematical equations to achieve predictive solutions to many engineering problems including for river engineering. The field data is surveyed, sampled, recorded and tested before it is entered into the numerical modelling program for analysis. The numerical modelling program contains various mathematical equations that solve the data that has been entered. Numerical modelling is an important tool for predicting the consequences of future events. It can be used for predicting the damage of a 1 in 100 year flood event in a river system. Numerical modelling is used by many organisations that deal with flooding. They use it to predict what would occur during a specific storm event and can then provide a flood relief scheme based on the results.

It is clear that numerical modelling is an important feature nowadays in the prevention of Hooding. Numerical modelling has improved a lot since it was first developed. There are a number of numerical modelling packages now available that deal with river engineering such as HEC-RAS, ISIS and MIKE 11. These programs are all used to simulate various situations such as steady and unsteady flows in a river. This is an important aspect as it allows the user to model a range of possibilities that could occur within the river. Numerical modelling programs can now model a range of situations such as sediment transport and water quality. These are an important aspect of river engineering and they haven’t been modelled extensively for the River Bandon.

As a part of this project testing and sampling data is going to take place. Samples of the water, the sediment both suspended and bed load will be taken from the River Bandon at set intervals throughout the project. This data will be tested and then used to create a numerical model of the river. The model will be created using HEC-RAS, a one-dimensional numerical model. Sediment transport and water quality of the river will be modelled. This is being done to examine the bed load of the river and to see if this is causing some of the flooding issues of the river.

## Access Level

info:eu-repo/semantics/openAccess

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