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Flow Physics

1.    Classify the job according to the physical phenomena involved:

  • Laminar or turbulent flow.
  • Compressible or incompressible.
  • Steady or transient.
  • Isothermal or not.
  • Emdedded resistance or porous media regions
  • Single or multi-component.
  • Single or multi-phase.
  • Chemical reaction.
  • Combustion and radiation. - etc.

2.    Establish whether physical sub-models exist which adequately describe the expected flow phenomena.

3.    Check that appropriate  (and where possible validated) physical sub-models are selected during model set-up.

4.    Undertake sensitivity tests, where necessary, to address uncertainty arising from physical sub-models.

  • Uncertainty in which model is most appropriate, i.e. Boussinesq or fully buoyant flow.
  • Uncertainty in the values of model parameters, such as inter-phase transfer terms.
  • Uncertainty in the mathematical model description of physical phenomena may require model development.