Wall Dynamics Tutorial for High-Pressure Systems

The wall dynamics approach is based on the fundamental heat transfer equation outlined in API Standard 521 Pressure-Relieving and Depressurizing Systems. In this presentation, see a demonstration of the wall segmentation method using Process Safety Office® SuperChems™ and its advantages. This software allows the user to:

  • Predict the fluid dynamics of equipment containing liquids, vapors, and
    multiphase flows with or without chemical reactions
  • Specify equipment internals using a variety of materials of construction
  • Connect multiple equipment and connect relief and process lines to the top and/or bottom of equipment
  • Include incoming and outgoing fluid streams
  • And more


Two case studies are included for demonstrating the application of the wall dynamics approach. Case study one shows how to model a pressure vessel where exposure to an open pool fire has been identified as a contingency of concern. Case study two demonstrates how to model a low-pressure atmospheric tank identified as exposed to thermal radiation, due to a nearby pool fire.

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A Tutorial on Wall Dynamics for Pressure Vessels

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