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Stochastic Water Demand Modelling: Hydraulics in Water Distribution Networks

Series: KWR Watercycle Research Institute Series

By: Mirjam Blokker(Author)

180 pages, b/w illustrations

IWA Publishing

Paperback | Sep 2011 | #206568 | ISBN-13: 9781780400280
Availability: Usually dispatched within 6 days Details
NHBS Price: £88.99 $121/€100 approx

About this book

Water quality processes in the drinking water distribution network are strongly influenced by the flow velocity and residence time of the water in the network. In order to understand how the water quality changes in the drinking water distribution network, a good understanding of hydraulics is required. Specifically in the periphery of the network, where customers are connected, the hydraulics can change rapidly. During the night time the water is almost stagnant and the residence time increases. In the morning, when everybody gets up and flushes the toilet and takes a shower, high flow velocities can occur.

During the remainder of the day flow velocities are low. The stochastic endues model SIMDEUM was developed to simulate water use on a small time scale (1 s) and small spatial scale (per fixture). SIMDEUM enables a good model of flow velocities, residence times and the connected water quality processes in the water distribution network.

Stochastic Water Demand Modelling: Hydraulics in Water Distribution Networks describes the requirements of hydraulics in water quality modelling and provides insight into the development of detailed residential and non-residential water demand models. Stochastic Water Demand Modelling illustrates the use of detailed demand models in water quality models with respect to the variation in residence times and the relation with particle accumulation and resuspension. The models are compared to measurements in several real drinking water distribution networks.


- Introduction
- Importance of demand modelling in network water quality models: a review
- Simulating residential water demand with a stochastic end-use model
- Simulating residential water demand with a stochastic end-use model
- Comparison of two approaches of residential water demand modelling
- A bottom-up approach of stochastic demand allocation in hydraulic and water quality modelling
- The self-cleaning velocity in practice
- General discussion and outlook
- Summary and conclusions

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