AFT xStream is based on the following fundamental fluid mechanics assumptions:

• Gas-phase flow only

  • AFT xStream is not meant for analysis of two-phase flow

• One dimensional flow

• No chemical reactions

• The pipes are rigid

• The Method of Characteristics (MOC) solution used here has several significant assumptions that impact accuracy - see the Method of Characteristics topic for more info

• Additional assumptions exist for particular modeling components and features, discussed where relevant