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Showing results 1 to 7 of 7 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX September 15, 2022, 07:08

Replies: 18 CFX Treatment of Laminar and Turbulent Flows Views: 25,341 Posted By ghorrocks I do not know of any reference. You can reference... I do not know of any reference. You can reference this forum thread if you like :) The comment came from looking at the equations those models use and thinking about the implications. A reference...

Forum: CFX April 30, 2018, 08:02

Replies: 18 CFX Treatment of Laminar and Turbulent Flows Views: 25,341 Posted By ghorrocks I suspect if you used a k-e model on a flow which... I suspect if you used a k-e model on a flow which is actually laminar it will converge fine and mass will be conserved. However the turbulence model will have put far too much dissipation into the...

Forum: CFX February 24, 2016, 17:35

Replies: 18 CFX Treatment of Laminar and Turbulent Flows Views: 25,341 Posted By ghorrocks It comes from the equations. As a turbulent flow... It comes from the equations. As a turbulent flow goes laminar then k and epsilon go to zero. The eddy viscosity equation has a k^2/epsilon term, this is undefined with epsilon equal to zero and...

Forum: CFX December 11, 2015, 19:52

Replies: 18 CFX Treatment of Laminar and Turbulent Flows Views: 25,341 Posted By ghorrocks I might add that the gamma theta model was... I might add that the gamma theta model was developed in rotating machine blade applications, and it works pretty well there. But it has not been tuned for other applications. Use of the model in...

Forum: CFX December 11, 2015, 17:38

Replies: 18 CFX Treatment of Laminar and Turbulent Flows Views: 25,341 Posted By ghorrocks I thought the post #5 is pretty clear. You... I thought the post #5 is pretty clear. You can use any transition model you like, but the gamma theta model is probably the most general. But the transition model only works with the SST...

Forum: CFX January 8, 2013, 17:17

Replies: 18 CFX Treatment of Laminar and Turbulent Flows Views: 25,341 Posted By ghorrocks If you have turbulence transition in a model then... If you have turbulence transition in a model then that sounds like a case for the turbulence transition model. Then there is no need for defining different domains, and then linking them together...

Forum: CFX March 18, 2010, 17:01

Replies: 18 CFX Treatment of Laminar and Turbulent Flows Views: 25,341 Posted By ghorrocks Then it will attempt to model the vorticities... Then it will attempt to model the vorticities which make up the turbulence, providing you have a numerical scheme accurate enough to capture this. If you run steady state you will not get...

Showing results 1 to 7 of 7

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