Determination of Neutral Point in Water Distribution Network Pipes with Variable Discharge on Route

Abstract:

Distribution networks are an essential part of all water supply systems. Distribution system costs within any water supply scheme may be equal to or greater than 60% of the entire cost of the project. The reliability of supply is much greater in the case of looped networks. The pipe networks have concentrated outflows or uniform outflow along the length of each pipe. In some pipes with variable discharge of a looped distribution network, water velocity could be reversed between its extremities. Thus, it is a water stall point denominated neutral point in which the discharge is null. In this paper a mathematical model for the determination of water stall point location in the pipes with distributed consumption is developed. This model has been implemented in a computer program for PC microsystems. Numerical example will be presented to demonstrate the accuracy and efficiency of the proposed model.

• Periodical: Advanced Materials Research (Volume 909)
• Pages: 428-432
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.909.428
• Online since: March 2014
• Authors: Ioan Sarbu*, Gabriel Ostafe
• Keywords: Computer Program, Distributed Consumption, Mathematical Models, Neutral Point, Pipe Network, Water Supply

References

[1] N.N. Abramov: Theory and Calculation Technique for Water Supply and Distribution Systems, Stroizdat, Moscow (1972).

[2] I. Sarbu: Energetically Optimization of Water Distribution Systems, Publishing House of Romanian Academy, Bucharest (1997).

[3] T.M. Walski, D.V. Chase, D.A. Savic, W. Grayman, S. Beckwith and E. Koelle: Advanced Water Distribution Modeling and Management, Haestad Press, Waterbury, USA (2003).

[4] A.L. Simon: Practical Hydraulics, John Wiley & Sons, New York (1976).

[5] R.P. Benedict: Fundamental of Pipe Flow, John Wiley & Sons, New York (1980).

[6] B.E. Larock, R.W. Jeppson and G. Watters: Hydraulics of Pipeline Systems, CRC Press (1999).

[7] M. Arsenie and D. Arsenie: Considerations on Hydraulic Calculation of Pipes with Uniform Distributed Discharge, National Symposium Actual issues in water management, Timisoara, Romania (1982), pp.204-209.

[8] M. Carlier: Hidraulique Générale et Appliquée, Eyrolles, Paris (1980).

[9] I. Pislarasu, N. Rotaru and M. Teodorescu: Water Supply, Technical Publishing House, Bucharest (1981).

[10] I. David: Considerations on Hydraulic Calculation of the Pipes with Variable Discharge along Their Length, Studies and Researches of Applied Mechanics, no. 5/6 (1984), pp.17-25.

[11] I. Sarbu: Numerical Modelling and Optimizations in Building Services, Polytechnic Publishing House, Timisoara (2010).