Flow over a Backward Facing Step at high Reynolds number

Flow over a backward facing step at high Reynolds number, starting from rest. The flow tends to some steady behaviour before getting again fully nonsteady.

This simulation is one of the oldest in the 'Virtual Album'!

• Distribution of temperature/concentration via Boussinesq model
  
  

  Visualization via distribution of a given concentration in the flow field, via temperature distribution from the heated walls (first, shaded, 4.1 MB), and via starting particles at the inlet (second, shaded, 3.8 MB).
  

  
  
  
  
  
  
  

• Pressure
  
  

  Visualization via pressure plots, shaded (first, 2.7 MB) and via isolines (second, 13.7 MB).
  

  
  
  
  
  
  
  

• Streamfunction
  
  

  Visualization via streamline plots, shaded (first, 2.6 MB) and via isolines (second, 15.7 MB).
  

  
  
  
  
  
  
  

• Velocity
  
  

  Visualization via vector plots (vectors, 18.6 MB).