Steadystate incompressible laminar Newtonianfluids solver

anja · January 27, 2006, 10:01

Hi,

does someone know, whether there is a solver for:
steady-state, incompressible, laminar, Newtonian-fluids

Thanks a lot,
Anja

eugene · January 27, 2006, 10:34

Sure, just run simpleFoam and switch the turbulence model to laminar.

anja · January 27, 2006, 15:34

And how do I have to do that? (I really can need the advice)

Thanks again

anja · January 27, 2006, 15:38

And what about the change from non-Newtonian fluids of simpleFoam to Newtonian fluids?

eugene · January 28, 2006, 05:15

simpleFoam uses Newtonian fluid by default.
Open the "turbulenceProperties" file in the "constant" sub-directory and change the turbulence model from "RNGkEpsilon" to "laminar".

anja · February 1, 2006, 09:33

And afterwards turbulence off?

And what about all the other files in which parameters for the turbulent calculation are used?

eugene · February 1, 2006, 09:58

Sure switch turbulence off if you like. The rest should just work.

February 1, 2006, 21:24

As an alternate solution, I ended up writing a small variant of simpleFoam for my own work that does exactly what you want -- incompressible, Newtonian, steady-state, laminar flow -- without any additional "features" like turbulence or viscosity models.

It's a pretty trivial combination of parts from the existing OpenFOAM applications, so I can't really claim any ingenuity in creating it, but to save you the trouble of recreating it I've put a copy online here: http://dpdx.net/software/openfoam/st...w_1.0.0.tar.gz .

There's a README.txt file in the .tar.gz file that covers what bits go where to install it.

anja · February 23, 2006, 10:09

Okay, one more question on that topic.
Why do I need a time-step for a steady-state solver?

hjasak · February 23, 2006, 10:17

It's not a time step, just an iteration counter - you can set the deltaT to whatever you like. I usually use 1.

Enjoy,

Hrv

anja · March 23, 2006, 06:43

Hi,

I'm still using simpleFoam as laminar solver. The problem is that the calculation takes that long. I've already changed the solver for p to AMG.
Is there any suggestion for the endtime in the controldict?

rameshbhoraniya · June 28, 2021, 00:34

Hello,
This file is not available here. can you email on rameshbhoraniya@gmail.com

January 27, 2006, 10:01	Hi, does someone know, whet	#1
anja Member Anja Stretz Join Date: Mar 2009 Posts: 92 Rep Power: 17	Hi, does someone know, whether there is a solver for: steady-state, incompressible, laminar, Newtonian-fluids Thanks a lot, Anja

January 27, 2006, 10:34	Sure, just run simpleFoam and	#2
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	Sure, just run simpleFoam and switch the turbulence model to laminar.

January 27, 2006, 15:34	And how do I have to do that?	#3
anja Member Anja Stretz Join Date: Mar 2009 Posts: 92 Rep Power: 17	And how do I have to do that? (I really can need the advice) Thanks again

January 27, 2006, 15:38	And what about the change from	#4
anja Member Anja Stretz Join Date: Mar 2009 Posts: 92 Rep Power: 17	And what about the change from non-Newtonian fluids of simpleFoam to Newtonian fluids?

January 28, 2006, 05:15	simpleFoam uses Newtonian flui	#5
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	simpleFoam uses Newtonian fluid by default. Open the "turbulenceProperties" file in the "constant" sub-directory and change the turbulence model from "RNGkEpsilon" to "laminar".

February 1, 2006, 09:33	And afterwards turbulence off?	#6
anja Member Anja Stretz Join Date: Mar 2009 Posts: 92 Rep Power: 17	And afterwards turbulence off? And what about all the other files in which parameters for the turbulent calculation are used?

February 1, 2006, 09:58	Sure switch turbulence off if	#7
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	Sure switch turbulence off if you like. The rest should just work.

February 1, 2006, 21:24	As an alternate solution, I en	#8
brooksmoses Guest Posts: n/a	As an alternate solution, I ended up writing a small variant of simpleFoam for my own work that does exactly what you want -- incompressible, Newtonian, steady-state, laminar flow -- without any additional "features" like turbulence or viscosity models. It's a pretty trivial combination of parts from the existing OpenFOAM applications, so I can't really claim any ingenuity in creating it, but to save you the trouble of recreating it I've put a copy online here: http://dpdx.net/software/openfoam/st...w_1.0.0.tar.gz . There's a README.txt file in the .tar.gz file that covers what bits go where to install it.

February 23, 2006, 10:09	Okay, one more question on tha	#9
anja Member Anja Stretz Join Date: Mar 2009 Posts: 92 Rep Power: 17	Okay, one more question on that topic. Why do I need a time-step for a steady-state solver?

February 23, 2006, 10:17	It's not a time step, just an	#10
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,907 Rep Power: 33	It's not a time step, just an iteration counter - you can set the deltaT to whatever you like. I usually use 1. Enjoy, Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

March 23, 2006, 06:43	Hi, I'm still using simpleF	#11
anja Member Anja Stretz Join Date: Mar 2009 Posts: 92 Rep Power: 17	Hi, I'm still using simpleFoam as laminar solver. The problem is that the calculation takes that long. I've already changed the solver for p to AMG. Is there any suggestion for the endtime in the controldict?

June 28, 2021, 00:34	Hellow	#12
rameshbhoraniya New Member rameshkumar m bhoraniya Join Date: Dec 2009 Posts: 22 Rep Power: 16	Hello, This file is not available here. can you email on rameshbhoraniya@gmail.com

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