Flow over a Backward Facing Step at different Reynolds numbers

Flow over a "backward facing step" at different Reynolds numbers, starting from rest. The flow tends to some steady behaviour (low and medium Re case), while it seems to be fully nonsteady for the high Reynolds number case. The corresponding coarse mesh for all calculations is plotted in the following diagram. For a detailed description of the simulated flow configurations look at the corresponding pages in the `Virtual Album'.

This simulation is one of the oldest in the 'Virtual Album' which might explain some funny colour representations!

• Distribution of temperature/concentration via Boussinesq model
  
  

  Visualization via distribution of a given concentration in the flow field, starting from the inlet (maximum size of 4 MB). First column shows the results for low, medium (second) and the high Reynolds number case (third column).
  

  
  
  
  
  
  
  
  
  

• Pressure
  
  

  Visualization via pressure plots, shaded (maximum size of 2.7 MB).
  

  
  
  
  
  
  
  
  
  

• Streamfunction
  
  

  Visualization via streamline plots, shaded (maximum size of 2.6 MB).
  

  
  
  
  
  
  
  
  
  

• Velocity
  
  

  Visualization via vector plots (maximum size of 19 MB).