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A simple but robust convergence trajectory controlled method for pressure driven analysis in water distribution

Hexiang Yan1, Qiongyu Wang1, Jiaying Wang1

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|May 18, 2019
PubMed
Summary

A new method ensures stable pressure driven analysis (PDA) in water distribution systems (WDSs) by controlling convergence. This robust approach improves hydraulic analysis, even under extreme conditions.

Keywords:
Convergence trajectory controlledEPANET3.0Pressure discharge relationshipPressure driven analysisWater distribution system

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Area of Science:

  • Hydraulic Engineering
  • Computational Fluid Dynamics
  • Water Resource Management

Background:

  • Traditional pressure driven analysis (PDA) in water distribution systems (WDSs) can suffer from uncontrolled convergence, leading to instability.
  • Robust hydraulic analysis is crucial for efficient and reliable WDS operation.

Purpose of the Study:

  • To introduce a novel convergence trajectory controlled method for PDA in WDSs.
  • To enhance the stability and robustness of hydraulic analysis in WDSs.

Main Methods:

  • Developed a method to forcibly decrease convergence error continuously during PDA.
  • Implemented two Relaxation Factor section strategies to guide convergence.
  • Modified EPANET3.0 source code for the novel methodology.

Main Results:

  • Validated the improved code with a benchmark WDS under rigorous conditions.
  • Tested the method's effectiveness and efficiency on four different sized WDSs.
  • Demonstrated significantly more stable and robust PDA convergence.

Conclusions:

  • The proposed convergence trajectory controlled method ensures stable and robust PDA in WDSs.
  • The method performs effectively even under extreme and abnormal boundary conditions.
  • This advancement offers improved reliability for hydraulic analysis in water distribution systems.