Practical channel hydraulics : roughness, conveyance, and afflux
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書誌事項
Practical channel hydraulics : roughness, conveyance, and afflux
CRC Press, c2010
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注記
Includes bibliographical references and indexes
内容説明・目次
内容説明
A technical reference guide and instruction text for the estimation of flood and drainage water levels in rivers, waterways and drainage channels. It is written as a user's manual for the openly available innovative Conveyance and Afflux Estimation System (CES-AES) software, with which water levels, flows and velocities in channels can be calculated. The impact of factors influencing these levels and the sensitivity of channels to extreme levels can also be assessed. Approaches and solutions are focused on addressing environmental, flood risk and land drainage objectives. Practical Channel Hydraulics is the first reference guide that focuses in detail on estimating roughness, conveyance and afflux in fluvial hydraulics. With its universal approach and the application of metric units, both book and software serve an international audience of consultants and engineers dealing with river modelling, flood risk assessment, maintenance of watercourses and the design of drainage systems. Suited as course material for training graduate Master's students in civil and environmental engineering or geomorphology who focus on river and flood engineering, as well as for professional training in flood risk management issues, open channel flow hydraulics and modelling.
The CES-AES software development followed recommendations by practitioners and academics in the UK Network on Conveyance in River Flood Plain Systems, following the Autumn 2000 floods, that operating authorities should make better use of recent improved knowledge on conveyance and related flood (or drainage) level estimation. This led to a Targeted Programme of Research aimed at improving conveyance estimation and subsequent integration with other research on afflux at bridges and culverts at high flows. The CES-AES software tool aims to improve and assist with the estimation of:
hydraulic roughness
water levels (and corresponding channel and structure conveyance)
flow (given slope); section-average and spatial velocities
backwater profiles upstream of a known flow-head control e.g. weir (steady)
afflux upstream of bridges and culverts
uncertainty in water level
The CES-AES software and tutorial are openly available at www.river-conveyance.net (see also Downloads & Updates tab).
目次
Forword
Chapter 1 - Introduction
1.1 Why is it needed?
1.2 Origin of the CES/AES
1.3 Scope of book
Chapter 2 - Practical issues in channel hydraulics
2.1 Common difficulties in modelling flow in watercourses
2.2 Flow in simple engineered channels
2.3 Inbank flow in natural rivers
2.4 Overbank flow in natural and engineered rivers
2.5 Flows through bridges and hydraulic structures
2.6 Data sources and uses in this book
Chapter 3 - Understanding roughness, conveyance and afflux or Scientific issues - roughness, conveyance and afflux
3.1 Concepts and flow structures
3.2 Governing equations (incl. limitations of the methods)
3.2.1 Roughness Advisor (RA) and roughness estimation methods
3.2.2 Conveyance Estimation System (CES) methods
3.2.3 Backwater calculation
3.2.4 Afflux Estimation System (AES) methods
3.3 Dealing with uncertainty
3.4 The CES/AES software (incl. limitations of the software)
3.4.1 Introduction to the RA (Roughness Advisor)
3.4.2 Introduction to the CES (Conveyance Estimation System - incl. uncertainty)
3.4.3 Introduction to the backwater module
3.4.4 Introduction to the AES (Afflux Estimation System)
Chapter 4 - Practical issues - roughness, conveyance and afflux
4.1 Estimating and using stage-discharge relationships
4.2 Estimating and using the lateral distribution of velocities and boundary shear stress
4.3 Use of backwater module
4.4 Estimating afflux at bridges and culverts
4.5 Dealing with vegetation and maintenance of weedy rivers
Chapter 5 - Further issues
5.1 Updated text on modelling, schematisation, flow structures
5.2 Dealing with ecological issues and habitats
5.2 Dealing with sediment and geo-morphological issues
5.3 Dealing with trash screens or other AES related items
5.4 Software - where it fits in with 1D, 2D, 3D modelling
5.5 Software - high-level flow charts - where future updates might fit into overall software and data flows
5.6 How to run and adapt the code - flow charts
Chapter 6 - Concluding comments
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