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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX May 23, 2015, 06:17

Replies: 9 Question about using turbulence model to laminar flow in CFX Views: 4,498 Posted By ghorrocks Interesting comparison, thanks for posting it. ... Interesting comparison, thanks for posting it. I had never thought about the relative grid sensitivity of laminar versus turbulent flow, but I guess laminar flows are more grid sensitive. The...

Forum: CFX January 28, 2013, 20:18

Replies: 9 Question about using turbulence model to laminar flow in CFX Views: 4,498 Posted By ghorrocks No. The issue is what happens when the turbulence... No. The issue is what happens when the turbulence level goes to zero. The important thing is the behaviour of epsilon/omega. The turbulence energy is simple, it just goes to zero. But epsilon is...

Forum: CFX January 28, 2013, 20:18

Replies: 9 Question about using turbulence model to laminar flow in CFX Views: 4,498 Posted By ghorrocks No. The issue is what happens when the turbulence... No. The issue is what happens when the turbulence level goes to zero. The important thing is the behaviour of epsilon/omega. The turbulence energy is simple, it just goes to zero. But epsilon is...

Forum: CFX November 5, 2012, 05:10

Replies: 9 Question about using turbulence model to laminar flow in CFX Views: 4,498 Posted By ghorrocks I remember years ago I compared a flow which was... I remember years ago I compared a flow which was quite laminar with a simulation using laminar and SST turbulence models. The SST model ran fine and the results were close enough to be useful. But I...

Forum: CFX November 4, 2012, 04:08

Replies: 9 Question about using turbulence model to laminar flow in CFX Views: 4,498 Posted By ghorrocks Yes, it will cause an inaccuracy. It can be... Yes, it will cause an inaccuracy. It can be minimised by using a turbulence model which degenerates nicely to zero turbulence. k-e get a divide by zero error at zero turbulence (unless it has a low...

Showing results 1 to 5 of 5

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