Merger of three parallel pipe flows (same speed) at low up to medium Reynolds number

Merger of three parallel pipe flows into a channel at low up to medium Reynolds number. The inflows through the inlets have the same parabolic profile. The resulting flow is nonsteady but still axi-symmetrical. This simulation has to be compared with the similar ones in the Album, including lower and higher Reynolds numbers and different types of inflows.

• Distribution of temperature/concentration via Boussinesq model
  
  

  Visualization via tracing of concentration, starting from the inlet, shaded (first and second as a zoom, 1.8 and 0.4 MB) and via isolines (third, 0.7 MB). The color red means `value of concentration +1' while blue stands for 'value of concentration -1'. Consequently, the green regions represent the mixed zones (concentration almost zero!).
  

  
  

  
  

  
  
  

• Pressure
  
  

  Visualization via pressure plots, shaded (first, 0.5 MB) and via isolines (second and third, as zoom, 1.7 MB and 1.8 MB).
  

  
  

  
  

  
  
  

• Streamfunction
  
  

  Visualization via streamline plots, shaded (first, 0.5 MB) and via isolines (second and third, as zoom, 0.6 MB and 1.7 MB).
  

  
  

  
  

  
  
  

• Velocity
  
  

  Visualization via vector plots (vectors, 4 MB) in a zoomed region.