'Turbulent Pipe Flow' simulation project by sjoshi


#1

I created a new simulation project called 'Turbulent Pipe Flow':

This project simulates turbulent flow through a straight circular pipe.


More of my public projects can be found here.


#2

For detailed study please go to Turbulent Pipe Flow documentation.


#4

As shown in Turbulent pipe flow tutorial, when we use k-epsilon model wall function approach we need not add more meshing near the wall ( less cells in wall normal direction) . But if we use full mesh resolution approach we need to have fine mesh near the wall ( more cells in wall normal direction ) . Am I right ??


#5

Hi @sbandaru and sorry for the delay.

You are right! As stated in the documentation:

  • “Full resolution” of the near-wall region: This approach explicitly models the boundary layer all the way down to the laminar sub-layer. It requires the first cell center to be placed at most at the top of the laminar sub-layer, where y+≈1. This procedure demands computational grid resolution in to be very fine.

  • Use of wall-functions to resolve the near-wall region: This approach allows for the center of the first cell next to the wall boundary to be placed in the range: 30⩽y+⩽300.

Best,

Jousef