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Chapter 9
Dynamic Behavior of Pumping Systems

Excerpt

Many of the dynamic analyses conducted during the design phase of a pump station or for trouble shooting problems are invariably involved in the startup and shutdown of centrifugal pumps, flow controls, and in the opening and closing of valves during operation scenarios. Interaction between system hydraulic dynamics and associated control protocols could also trigger severe dynamics and catastrophic failure or system overall reliability issues. Expansion of pump stations to cope with either capacity increases or changes in conditions or products can be a challenge. The addition of various units in series or parallel with different pump head-flow characteristics, and drivers’ type and inertias, require attention and thorough analysis.

  • 9.1 Introduction
  • 9.2 Unsteady Governing Equations and Solution Techniques
  • 9.3 Boundary Conditions
  • 9.4 Dynamics Behaviour of Centrifugal Pumps
  • 9.5 Water Hammer, Cavitation, and Column Separation
  • 9.6 Cavitation and Column Separation
  • 9.7 Examples and Case Studies
  • References

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