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The University of Southampton
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CENV6174 Flood Modelling and Mitigation

Module Overview

Floods are amongst the most damaging and costly of all natural hazards. Worldwide, frequent occurrences of heavy rainfall and other drivers combine with high levels of human exposure and high-value and vulnerable assets to produce multi-billion losses every year. Considering the world’s rapid urbanization, as well as the prospect of strongly adverse climate change effects, understanding and developing methods to mitigate the impacts of floods is attracting widespread concern and has become one of the top challenges of our generation. Crucial to our capacity to engineer rivers, cities and infrastructure that are resilient to floods is our ability to predict the probability or certain events (rainfall, storm surge, waves) to occur, and to model the corresponding process of inundation. The latter is used to accurately predict flow depths and velocities that will occur under different scenarios of rain or other flood-inducing factors and for existing or designed conditions. These models are extremely powerful tools that are used by engineers to optimise costly investments in flood risk mitigation systems, to support emergency relief measures, to price insurance premiums or to design flood-resilient infrastructure. With increasing demand for accurate predictions of flooding, it is important that engineers develop detailed understanding of how these tools can be used to predict and mitigate the risk of flooding. This module will provide students with the knowledge required to use state-of-the-art models, and critically assess the results of flood simulations. By the end of the module students will also be able to judge and decide which, among the many models currently available, is best suited to simulate particular types of problems in engineering.

Aims and Objectives

Learning Outcomes

Knowledge and Understanding

Having successfully completed this module, you will be able to demonstrate knowledge and understanding of:

  • Having successfully completed the module, you will be able to demonstrate knowledge and understanding of: A1. The overall methods used by engineers to assess the risk of flooding and to simulate flood mitigation measures. A2. Estimation of probabilities associates with rainfall events. A3. Selected rainfall-runoff models. A4. Mathematical models used to simulate propagation problems in general and in particular in hydraulics. A5. Governing equations that are used to simulate shallow water flows in open-channels in one and two dimensions. A6. Important concepts related to the numerical solution of partial differential equations. A7. The strengths and limitations of some numerical methods usually used in hydraulics to solve open-channel flow equations.
Transferable and Generic Skills

Having successfully completed this module you will be able to:

  • Having successfully completed this module, you will be able to: C1. Independently learn new topics related to hydraulics and hydrology. C2. Perform analysis and problem solving more effectively. C3. Handle information and data efficiently. C4. Use models to support decision making. C5. Perform data analysis. C6. Think logically and conceptualise problems for solution by computer algorithm. C7. Use the MATLAB programming platform including built-in functions. C8. Present data to support decision making. C9. Critically assess and judge the quality of computer analysis output. C10. Manage time.
Subject Specific Practical Skills

Having successfully completed this module you will be able to:

  • Having successfully completed this module, you will be able to: C1. Independently learn new topics related to hydraulics and hydrology. C2. Perform analysis and problem solving more effectively. C3. Handle information and data efficiently. C4. Use models to support decision making. C5. Perform data analysis. C6. Think logically and conceptualise problems for solution by computer algorithm. C7. Use the MATLAB programming platform including built-in functions. C8. Present data to support decision making. C9. Critically assess and judge the quality of computer analysis output. C10. Manage time.

Syllabus

- General introduction to the relevance of the topics addressed in the course. - Components of the hydrological cycle, basics of rainfall-runoff modelling. - Probability of hydrological events. - Hydraulic modelling of open-channels: steady non-uniform flow. - Introduction to modelling time dependent problems with partial differential equations (PDEs). - Numerical solution of simple scalar problems governed by PDEs. - One-dimensional unsteady open-channel flow equations. - Solution of open-channel flow problems by finite volume methods. - Applications to the design of stilling basins. - Modelling waves and flooding due to wave overtopping. - Two-dimensional modelling of flood inundation. - Introduction to Computational Fluid Dynamics (CFD).

Learning and Teaching

Teaching and learning methods

• Lectures and tutorials • Computer lab supervisions/Computer lab classes • Tutorials and worked examples • Problem assignments • Private study

TypeHours
Lecture31
Practical classes and workshops5
Total study time36

Assessment

Assessment Strategy

Assignment 1 (Modelling river flooding with 1D software): 20% Quizz 1: 5% Quizz 2: 5% Final exam: 70%

Summative

MethodPercentage contribution
Coursework  (5000 words) 20%
Examination 70%
Quizzes 10%

Repeat Information

Repeat type: Internal & External

Linked modules

Pre-requisites

To study this module, you will need to have studied the following module(s):

CodeModule
CENV2008Hydraulics
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