You are not logged in You are not logged in to this journal. Log In

Journal of Water Resources Planning and Management / Volume 134 / Issue 6 / TECHNICAL PAPERS

LOG IN or SELECT A PURCHASE OPTION:

Extended Period Simulation Analysis Considering Valve Shutdowns

J. Water Resour. Plann. Manage. 134, 527 (2008); http://dx.doi.org/10.1061/(ASCE)0733-9496(2008)134:6(527) (11 pages)

Orazio Giustolisi1, Zoran Kapelan2, and Dragan Savic3

1Professor, Dean, II Engineering Faculty, Dept. of Civil and Environmental Engineering, Technical Univ. of Bari, via Turismo, 8, 74100 Taranto, Italy. E-mail: o.giustolisi@poliba.it
2Senior Lecturer, Centre for Water Systems, Univ. of Exeter, Harrison Bldg., North Park Rs., EX4 4QF, Exeter, U.K. E-mail: z.kapelan@ex.ac.uk
3Professor, Centre for Water Systems, Univ. of Exeter, Harrison Bldg., North Park Rd., EX4 4QF, Exeter, U.K. E-mail: d.savic@ex.ac.uk

View MapView Map

(Submitted 5 March 2007; accepted 15 April 2008)

Planned (e.g., regular maintenance) and unplanned (e.g. pipe burst) interruptions occur regularly in water distribution systems leading to their reduced performance. This paper presents an extended period simulation model capable of assessing system’s performance under these conditions. The extended period simulation model is based on the recently developed steady-state pressure driven hydraulic model and is capable of calculating pressures, flows, and hence actual water demands delivered under modified network topology conditions (caused by the use of isolation valves). The model is accompanied by several reliability indicators which can be used to assess system’s performance under interruptions. The above-mentioned methodology is demonstrated on a real-life case study in Italy. The role of isolation valve design and uncertainty in valve operability is analyzed and discussed. The case study results obtained demonstrate that the least cost design/rehabilitation of water distribution systems is likely to result in unreliable systems if the actual network configurations obtained by closing isolation valves in abnormal working conditions are not taken into account.

© 2008 ASCE

Article Outline

  1. Introduction
  2. Pressure-Driven Network Simulation Model
    1. Diurnal Water Demand Curve
    2. Some Modification to qact
  3. Water Demand Performance Indicators
  4. Probability of Pipe Failure
  5. Water Volume Performance Indicators
    1. Unsupplied Water due to Pipe Failure
  6. Case Study: Apulian Network
    1. Isolation Valve Scenarios
  7. Discussion of Results
  8. Conclusions

KEYWORDS

RELATED DATABASES

To view database links for this article, you need to log in.

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1061/(ASCE)0733-9496(2008)134:6(527)

PUBLICATION DATA

ISSN

0733-9496 (print)  
1943-5452 (online)

Publisher

ASCE

For access to fully linked references, you need to log in.

For access to citing articles, you need to log in.


Figures (7) Tables (2)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)


Close

Your Recent History Recent History Help

Recently Viewed

  1. Extended Period Simulation Analysis Considering Valve Shutdowns
  2. Efficient Sensor Placement Optimization for Securing Large Water Distribution Networks
  3. Practical Solution Concepts for Planning and Designing Roadways
  4. Single-Stage Integer Programming Model for Long-Term Transit Fleet Resource Allocation
  5. Estimating Highway Capacity Considering Two-Regime Models
close