turbulenceProperties Dictionary turbulence setting

JFM · December 15, 2013, 09:26

Good day All I have reviewed documentation and this forum and cannot find a description / purpose of the turbulence entry in the turbulenceProperties file. Could someone confirm the purpose of the following entry?

Code:

turbulence off

Is this a switch that simply switches off the viscous terms? Or does this deactivate the nominated turbulence model irrespective of the dictionary entries (e.g. RASProperties). Any assistance will be greatly appreciated. Kind regards JFM

Bernhard · December 16, 2013, 03:24

The latter one. The solvers that allow turbulence models (i.e. pisoFoam), needs to know whether or not it should use one.

icaroaccordi · December 16, 2013, 09:54

This makes the turbulence model to work as laminar but copy the turbulence files (k, epsilon, omega, etc) to time folders. It is good to inicialize a flow as laminar and continue it as turbulente.

December 15, 2013, 09:26	turbulenceProperties Dictionary turbulence setting	#1
JFM Member John Anonymous Join Date: Jan 2011 Location: Melbourne Australia Posts: 37 Rep Power: 15	Good day All I have reviewed documentation and this forum and cannot find a description / purpose of the turbulence entry in the turbulenceProperties file. Could someone confirm the purpose of the following entry? Code: turbulence off Is this a switch that simply switches off the viscous terms? Or does this deactivate the nominated turbulence model irrespective of the dictionary entries (e.g. RASProperties). Any assistance will be greatly appreciated. Kind regards JFM

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December 16, 2013, 03:24		#2
Bernhard Senior Member Bernhard Join Date: Sep 2009 Location: Delft Posts: 790 Rep Power: 22	The latter one. The solvers that allow turbulence models (i.e. pisoFoam), needs to know whether or not it should use one.

December 16, 2013, 09:54		#3
icaroaccordi Member Icaro A. Accordi Join Date: Oct 2010 Posts: 31 Rep Power: 16	This makes the turbulence model to work as laminar but copy the turbulence files (k, epsilon, omega, etc) to time folders. It is good to inicialize a flow as laminar and continue it as turbulente.