Newtonian fluid SimpleFoam

nico · January 9, 2006, 13:39

I have a short question. Can I use the simple solver for Newtonian fluids, if I set the viscosity model in /constant/transportproperties to Newtonian?

nico · January 9, 2006, 13:56

One more question:

Can somebody tell me what is nuTilda?

hjasak · January 9, 2006, 19:11

First question: yes, that's now you do Newtonian fluids.

Second question: are you looking at the SpalartAllmaras model or somewhere else? If so, have a look at the paper and you will find out all: nuTilda is the kinematic turbulent viscosity the models solves for.

Enjoy,

Hrv

nico · January 10, 2006, 02:24

Thanks.
No I don't look at the SpalartAllmaras model. I was just wondering if I will need the Field nuTilda if I use Newtonian transportModel.

Nico

nico · January 10, 2006, 04:27

I found the answer for my question. i dont need nuTilda, if my fluid is laminar

January 9, 2006, 13:39	I have a short question. Can I	#1
nico Member Nico Petry Join Date: Mar 2009 Posts: 36 Rep Power: 18	I have a short question. Can I use the simple solver for Newtonian fluids, if I set the viscosity model in /constant/transportproperties to Newtonian?

January 9, 2006, 13:56	One more question: Can some	#2
nico Member Nico Petry Join Date: Mar 2009 Posts: 36 Rep Power: 18	One more question: Can somebody tell me what is nuTilda?

January 9, 2006, 19:11	First question: yes, that's no	#3
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,907 Rep Power: 34	First question: yes, that's now you do Newtonian fluids. Second question: are you looking at the SpalartAllmaras model or somewhere else? If so, have a look at the paper and you will find out all: nuTilda is the kinematic turbulent viscosity the models solves for. Enjoy, Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

January 10, 2006, 02:24	Thanks. No I don't look at th	#4
nico Member Nico Petry Join Date: Mar 2009 Posts: 36 Rep Power: 18	Thanks. No I don't look at the SpalartAllmaras model. I was just wondering if I will need the Field nuTilda if I use Newtonian transportModel. Nico

January 10, 2006, 04:27	I found the answer for my ques	#5
nico Member Nico Petry Join Date: Mar 2009 Posts: 36 Rep Power: 18	I found the answer for my question. i dont need nuTilda, if my fluid is laminar

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